Who Uses This Software?

Global 2000


Average Ratings

48 Reviews
  • 4.5 / 5
    Overall
  • 4.5 / 5
    Ease of Use
  • 4.5 / 5
    Customer Service

Product Details

  • Starting Price
    $3.25/month/user
  • Pricing Details
    https://about.mattermost.com/pricing/
  • Free Version
    Yes
  • Free Trial
    Yes
  • Deployment
    Cloud, SaaS, Web
    Installed - Mac
    Installed - Windows
    Mobile - Android Native
    Mobile - iOS Native
  • Training
    Documentation
  • Support
    Online
    Business Hours

Vendor Details

  • Mattermost
  • about.mattermost.com
  • Founded 2015
  • United States

About Mattermost

Mattermost provides enterprise-grade collaboration solutions for the worlds leading organizations on a vibrant open source platform. Our private, hybrid and public cloud solutions offer secure, configurable, highly scalable messaging across web, mobile and PC with archiving, search, and deep integration across in-house systems.


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Mattermost Features

  • Audio / Video Conferencing
  • Brainstorming
  • Chat / Messaging
  • Contact Management
  • Content Management
  • Cooperative Writing
  • Discussion Boards
  • Document Management
  • Group Calendars
  • Project Management
  • Synchronous Editing
  • Task Management
  • Version Control
  • Blogs
  • Chat/Messaging
  • Email Management
  • Employee Directory
  • Event Calendar
  • Newsletter Management
  • Photo Gallery
  • Social Sharing
  • Survey Management
  • Telephony
  • Activity / News Feed
  • Calendar Management
  • Chat / Messaging
  • Discussion Threads
  • File Sharing
  • Push Notifications
  • Search
  • Surveys & Feedback
  • Task Management
  • Video Conferencing

Mattermost Reviews Recently Reviewed!


Great alternative to Slack, especially for the price

Apr 16, 2018
4/5
Overall
3 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
5 / 5
Value for Money

Pros: It's very simple to use and much much cheaper than its competition. Persistent chat is beneficial when working with teams across multiple time zones -- email notifications when I'm not signed in is great.

Cons: There is something that's somewhat intangible but for some reason Slack feels better. Slack seems more elegant, but overall, this is the only negative thing I could find about the software. Overall it meets and exceeds my team's needs for a fraction of the price.

User of Mattermost Team Edition

Jan 10, 2018
4/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
3 / 5
Customer Support
5 / 5
Value for Money

Pros: It's open source which allows our team to scratch our own itch. Decent performance and ability to deploy behind our firewall put if above the competition

Cons: The open-core nature of the product means we've had to come up with workarounds for missing features like LDAP authentication. Not quite the same support among other services as Slack.

Capterra-loader

A very low friction transition from less flexible more expensive team chat solutions.

Jan 10, 2018
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: Great integration with as many systems as we want including with SSO and being able to roll our own tweaks when necessary.

Cons: Audio and video integrations are still in beta and a bit rough. My teams pretty much prefer out of band calls for that which detracts from team interactions. Also notifications are a little dicey.

Overall: One place for team communications that Slack/Hipchat users find familiar and everybody else learns easily. Integration with other software in our mostly open source workflow.

Capterra-loader

Great user acceptance and ease of use

Jan 09, 2018
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
3 / 5
Customer Support
5 / 5
Value for Money
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Pros: The interface is pretty much self-explanatory. This is why the user acceptance is quite good. Customizing the interface is straight forward and can be done at user level.
The open source cummunity around Mattermost is really nice and welcoming.
Apps for every operating systems are available and easy to use once manually set up.
Scalability was never a problem with 1000+ users.

Cons: Setting up integrations is more complex than with Slack, where integrations can be installed with one click in the backend. There is an app directory, but the apps need to be set up manually. Once set up, they just work. Incoming webhooks are the only exception; they work out of the box.
Mobile perfomance is gradually getting better, but it's not yet up to Slack's par.
The Windows-app is not yet ready for big scale rollouts via group policies.

Great tool that works just the way it should, high quality, performance, and UX.

Jan 09, 2018
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
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Pros: I like most that it's a very unobtrusive tool that "just works" without getting in the way, be it in the browser, as a desktop app, or on mobile. It's Open Source and can be self-hosted, allowing for private communication. I also love the open, active and welcoming community.

Cons: There's really nothing in Mattermost, that I don't like at all. But if I could wish for something, I'd like to have a list of "favourite chats" (channels or direct chats) that are always visible, independent of the current team selection.

Self-installed internally

Jan 08, 2018
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
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Pros: We own all the data - it's not sent to 3rd party. Price is right. Ease of integrations of our own coding.

Cons: it's lagging behind slack in 'slickness' of UI, pre-canned integrations, and overall feature list (albeit pretty close)

Overall: self-reliance is pretty key - plus the cost of licensing Slack was wildly disproportional to the value gained for 900+ person company.

Great product, recommend it to everyone, and best of all

Jan 08, 2018
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: The use of web sockets and consistency between platforms and ability to self host the software. Open source is also a high point.

Cons: Lack of asymmetric end-to-end encryption. Would like to see server side ability to enable/disable this feature, as well as seeing it as either mandatory or opt-in for each chat session. Would be best if each client would generate a key-pair and give public cert to the server and each other client signed/encrypted it with the public key.

Capterra-loader

i have used Mattermost; admin for linux instance and a beginner contributor to the open source repo.

Jan 08, 2018
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: -Self hosted: This is essential for if your company needs permission to share your data with other entities. All your data stays within your own system and therefore is more secure and private. Potential for HIPPA compliance and other government regulation compliances.

-Free Tier: great services in the free tier

-Open source: enough said

-Go and ; React Apps: Great tools

-Fast

-All the same functionality as Slack

Overall: (already listed in previous question)

Great software. Helps us a lot in our day-to-day business.

Jan 08, 2018
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
4 / 5
Value for Money
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Pros: Very supportive and open-minded team which helps where they can. Also open for new feature ideas. Almost en par with Slack but self-hosted which is a big bonus for companies in privacy concerned organizations.

Cons: The iOS app could be better. Complicated installation/update if you don't do it via gitlab-omnibus package.

If you want to have a hosted solution this is one of the best ones!

Jan 04, 2018
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: - open source
- you can customize
- support to several languages
- have slack support to import the data and reuse the webhooks

Cons: - The tech stack may be hard for people that dont know Go or Javascript
- missing features in the open source option

Mattermost just works seamlessly, does the job and more.

Jan 03, 2018
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Value for Money

Pros: The ability of Mattermost to detect that you paste an image URL and display the image without getting out of Mattermost, and the fetching of Oembed/Opengraph/whatever data of URLs, providing summary of pages.
And the extendability with hooks.

Cons: Well, sometimes, I can't find the message I'm looking for with the research feature, but it surely is caused by bad search terms. Putting flags on important messages helps not loosing them.

I run my own instance to chat with my friends since long time (40984 messages from ~15 users)

Jan 02, 2018
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 8.0/10 Not
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Pros: In fact, I enjoy how data are linked by channel and hashtag, to plug it easily to integrate it w/ existent tools.

Cons: Not a lot to say here, native gif integration is missing and more command to activate some sounds or i don't know.

Overall: Better communication and project management, easy notifications and less mail exchange.

Great open source messaging application and slack alternative

Jan 01, 2018
4/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
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Pros: The product is easy to use and there is lots of documentation on github updated regularly by developers and community. You control your data and security because software can be hosted on premise. Thread reply is much better than what slack did. Mattermost has short release cycle, feature vote forum, your voice matters to the company

Cons: Overall UI is not bad but in my opinion slack has much more beautiful look. Expiration time for authentication token is quite short, you would need to re-login every month or so

Mostly as a contributor, with some administration and end user experience

Dec 31, 2017
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
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Pros: Open source and flexible. I like being able to contribute to making the product and community a better place.

Cons: Sometimes it can feel unpolished. Cool little features can get added but more core functionality doesn't get implemented.

Overall: Learning to code through contributions.

Best in-house Slack alternative

Dec 30, 2017
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
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Pros: Their API is a replica of Slack which helps you integrate almost any product, only some online applications stick to a Slack specific URL.

Cons: Features, feature set is not as complete as in Slack. The timeline and roadmap is not very clear to me.

Very good system, especially because you can host it for free.

Dec 30, 2017
4/5
Overall
5 / 5
Ease of Use
3 / 5
Features & Functionality
4 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 7.0/10 Not
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Pros: You can host it for free.
Markdown support.
Gitlab Integration and updates.
Easy to administrate.

Cons: There are many mature alternatives.
Lacks some features or has them but you need to do way to much setup.
Doesn't feel as polished as others.
Mobile app is getting better, but still not up to the competition.

Overall: Better communication on a company level.

Mattermost is an exceptional collaboration tool for our team.

Dec 30, 2017
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
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Pros: Free software which is included in Gitlab, this makes collaborating on code easy and it helps with asynchronous communication.

Cons: The use of push services could be easier to use it in real time on mobile devices. The setup process is a bit complex for non-tech users.

Full of great features for this chat system

Dec 29, 2017
4/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
3 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 8.0/10 Not
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Pros: Frequent release with new features, and the ability to host mattermost on our own server.
Ability to add our own commands for specific needs

Cons: Upgrade could be simplify.
Mobile apps do not allow authentification by certificate
API changes broke few commands after a matter most upgrade

Overall: Better communication between teams of our company in different locations

I used this as a potential slack replacement.

Dec 29, 2017
3/5
Overall
3 / 5
Ease of Use
3 / 5
Features & Functionality
3 / 5
Customer Support
4 / 5
Value for Money

Pros: It's free and integrates with gitlab. It has the same features as slack and doesn't have many of the limitations

Cons: It (used to at least) require your own notification service and wasn't as smooth as slack. The apps may have gotten better since I used it last (it's been about a year). Free Slack still tends to dominate the market.

Nice free solution for small teams with basic features

Dec 29, 2017
3/5
Overall
4 / 5
Ease of Use
3 / 5
Features & Functionality
5 / 5
Customer Support
3 / 5
Value for Money
Likelihood to Recommend: 6.0/10 Not
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Pros: Very similar to Slack or Rocket.Chat
Easy to use
Open-source!
Cheaper than Slack
Very readable docs
Docker friendly

Cons: AD/SAML/LDAP integration are not for free, unlike for Rocket.Chat
I can not find many reasons why to pay, when free variants with more features are available - eg. Rocket.Chat or Zulip.

Overall: Great experiences

It's alright

Dec 29, 2017
3/5
Overall
3 / 5
Ease of Use
3 / 5
Features & Functionality
4 / 5
Customer Support
3 / 5
Value for Money
Likelihood to Recommend: 4.0/10 Not
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Pros: I don't use it on a normal bases. I only admin the server and upgrade it. make sure it doesn't break

Cons: The way you login and using UID blows! You can't delete users from the GUI. Why do you have a GUI interface when you can't do stuff like completely delete a user. Why do I have to go into the backend

Overall: I get nothing. The company I work for gets to chat in create their own chat rooms. Zoom integration is good

So far Mattermost as delivered what it has promised. It's a fast evolving product you can trust.

Dec 29, 2017
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: It is free and opensource, so you know what you are running and you can contribute to it whenever you think there's something that can be improved. It has all the necessary tools to be the organization's chat platform and whenever you find and odd problem, the support is there to help you.

Cons: It is not yet as intuitive to use integrations as it is with slack. The UI although has improved greatly over time, it still has room to improve.

Amazing Team Collaboration

Dec 25, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: So intuitive interface and so less clutter. The teams love mattermost for many things, integrations, easy to use interface, stability of the software.

Cons: 1. The ability for anyone to delete a channel.
2. Lack of SAML support for team edition

Good value

Dec 20, 2017
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: Feature set is growing with each release. Application upgrades are fairly simple. Team is responsive.

Cons: Still light on some features that competitors offer. Mobile performance has been a challenge. No auto-update feature on desktop app.

The best alternative to Slack and best work messaging app on the market

Dec 20, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: There are not that many good options for team messaging apps. Hipchat or Microsoft Teams do not even come close in terms of either functionality or scalability from a slack. Hipchat,Yammer, Skype were from another generation. However slack is expensive, and they limit your search history, if you're using their free version. Mattermost has the exact same functionalities but its code base is totally open so it can be integrated with anything you can think of (even those legacy applications that Slack won't bother with).

Cons: Might take you an hour to deploy. and if you're not familiar with deploying applications you might have to read the instructions... But other than that. It's a 10/10.

Capterra-loader

Great open source option for team communication

Dec 20, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality

Pros: I always prefer to use open source software where possible. Mattermost was a great option to have in the running with the likes of HipChat and Slack. The community was great and it was easy to contribute.

Cons: The mobile experience didn't seem quite as polished as other collaboration software at the time, it's possible that this aspect has improved recently.

Great self-hosted alternative to Slack.

Dec 20, 2017
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: Matter most lets you own your own data. Self-host Mattermost means not letting a third-party control what actually matters in a chat open. The open dvevelopment model gives insight into the upcoming relase cycle, see if others have solved integration issues that you may be attempting, file bug reports and follow the progress in fixing or even contributing a fix back yourself.

Cons: Mattermost still has some rough edges regarding their mobile clients. The new native app is definitely better than the previous web-view one though.

a very collaborative communication tool

Dec 20, 2017
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money

Pros: the channels and threads mechanism as well as the ability for direct messages helps to keep clear conversations and stay on topic

Cons: installing plugins is difficult, it would be nice to have a marketplace in the admin area where you can easily install new addons

Mattermost is the every day reliable work mule that powers our team's direct communication needs.

Dec 20, 2017
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
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Pros: It is an easy to use, open-source and free messenger, which can be setup either on-premises or hosted on a cloud platform, while also being docker friendly. Community extensions and plugins, as well as optional commercial enterprise-level support, provide infinite extensibility and flexibility options.

Cons: A few more service integrations, like audio/video conferencing, contacts/calendar sharing, attachments managing, better in-chat previews would be positive moves, although these features are getting improved version by version.

Complete, reliable and user friendly, also for the administration part.

Dec 20, 2017
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Value for Money
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Pros: New features coming without increasing complexity for the user, the open source DNA, it's capacity to integrate anywhere.

Cons: The mobile app could be faster, and I miss the capacity to paste easily something with more than 4000 characters.

Overall: Better team communication, improved efficiency, new communication channel

I'm just using Mattermost for communicating with the developer community, it's great so far.

Dec 20, 2017
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money

Pros: It's open source, so I know what's happening. When it comes to messaging & privacy, transparency is important.

Cons: If the application's startup time is fast to my expectation and slightly less buggy, I'm going to love it a lot more.

Good start, not as compelling as alternatives

Dec 19, 2017
3/5
Overall
2 / 5
Ease of Use
2 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 7.0/10 Not
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Pros: It's free and open. We can take the code and run it ourselves and suggest changes for features and fixes in an open manner that has community involvement.

Cons: It seems slower to release updates and features and not as feature rich as alternatives. The support and community seems much smaller than slack and hipchat.

Overall: Internal chat that is faster than email but not as immediate as SMS.

Switched to Mattermost after using Slack extensively, but got sick of the 10000 message limit

Dec 19, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: That we can host it ourselves, for one. We used to use the free tier of slack, but quickly discovered that the message limit was causing issues when we needed to recall conversations had in the past. It's been relatively hassle-free in getting it set up, and the whole team love it! One or two of us (myself included) were inspired to brush up on some of our coding skills when we discovered it didn't quite have the integrations that slack did, and as such have learned a lot about how Mattermost is put together, and how to create bots to get the information we need via webhooks. The Mattermost developers and community at large have been very helpful in answering questions when we've come up against issues, and I have even got a couple of my integrations featured on the integrations page of their website!

Cons: Really, not a whole lot. Ideally I would like to be able to sign into multiple slack servers from the mobile app (though, the native app has really come along in leaps and bounds recently). The only thing I miss from the Slack days is a sidebar/widget that tells you the local times of the other users (handy when working with folk from overseas!), though we have recently developed our own slash command to return this information, it would be nice if it was built in to the server. I should probably feed this back to the devs.... ;)

Overall: A platform to discuss issues and feature ideas around our open source project, without cluttering up the threads on github. A great way to stay in touch with devs from all around the world.

Very intuitive and solid software which is perfect for running a slack replacement on premise.

Dec 19, 2017
4/5
Overall
4 / 5
Ease of Use
3 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
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Pros: * The replacement of slack
* Mattermost has almost the same features as Slack
* You can host and run your own instance on your own server (For companies which hate clouds) :)
* You have a good overview of logs and you can see what goes around
* The statistics gives a good point when a dev team is productive
* You can easily create unlimited integrations which some internal stuff

Cons: * The lack of integrations (Slack is here over the top)
* The incoming hook limitation of maximum content length is the hell (Mattermost don't inform the customer about a message which was higher above the hard coded message size limit)
* UX in Slack is a little bit better (Slack is massively using websockets and eventstreams to fetch the actual team messages) -> You see always whats going on
* A 'Unread' channel (like in slack) would be a pleasure ;)
* A step by step guide for creating an integration would not bad for not advanced users

Overall: A super and ready to use Slack alternative.

Excellent alternative to Slack if you need on-prem or do-it-yourself deployment

Dec 19, 2017
4/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: It's open source, so you can tweak, audit, and customize to your heart's content. It can be deployed on-prem so you can meet whatever security requirements you have.

Cons: Doesn't feel as polished as Slack. There are a lot of little UI quirks that bother me. Aside from that, there's not much not to like.

I've had a pleasant experience so far with Mattermost

Dec 19, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
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Pros: I love the look and feel of the web application - it's really intuitive to use and the response time to the questions I've had about the product has been really prompt.

Overall: I'm not a frequent user of this software so I have not found a way to see a list of all sent attachments in message channels.

Mattermost is a great chat client and it is very easy to use.

Dec 19, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money

Pros: I really like the fact that it's open source and people from the community have the option to contribute things that they would like to see in Mattermost.

Cons: Slack has a bot that shows you how to use slack, and sometimes gives you tips on what you can do. It also allows you test out different messaging features. Mattermost doesn't have a bot like this.

Mattermost is a great tool for business collaboration. Easy, professional, lightweight.

Dec 19, 2017
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: Open Source community driven.
Very easy to install and maintain.
Very stable.
Easy to integrate.

Cons: Some fancy features might take forever to be implemented.
Lacks some nice to have admin features for large user groups.

Overall: Finally we managed to bring people together to discuss things in an easy way on the global level. E-mail threads that hurt are ghosts of the past now.

I deploy a Mattermost instance for a FOSS student association.

Dec 19, 2017
5/5
Overall
4 / 5
Ease of Use
3 / 5
Features & Functionality
3 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Pros: - FOSS / Ability to self-hosted
- Very good alternative to Slack
- Docker support
- Good documentation

Cons: The process to ask for new features is quite heavy : first you need to submit proposal, wait for some votes, then wait for Mattermost team to create the task and wait for the implementation.

A great "behind-the-firewall" solution

Dec 19, 2017
4/5
Overall
4 / 5
Ease of Use
3 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 8.0/10 Not
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Pros: Good solution for teams that can't use cloud-hosted chat solutions. Feature parity with many popular cloud apps. Good developer tools support for powerful features like incoming webhooks.

Cons: Some UI glitches, such as emoji-autocomplete. App sometimes doesn't reconnect after network goes down and comes back up again. No Google Auth support for native iOS client.

Overall: Improved inter-user communication

Capterra-loader

Awesome.

Dec 19, 2017
5/5
Overall
4 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
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Extremely
Likely

Pros: Can be installed on-premise and is open-source. I can secure and audit the software myself and I don't have to trust any external partners.

Cons: Right now I would say : backups. I have not found a good canonical documentation source about backups (and most importantly, how to restore them). It's nice to see Gitlab backing of the project, but I hate the fact that it's bundled together.

Overall: Like I just said, full and easy auditing of the stack. The API is clean enough to pair with pretty much anything.

Capterra-loader

Amazingly smooth

Dec 19, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 10.0/10 Not
Likely
Extremely
Likely

Pros: It's open source, free, actively maintained, ability to self host it and tailor to our needs, extensible through various integrations.

Overall: Saved a lot of nerves and money, and vastly improved team communication.

Capterra-loader

Great

Dec 19, 2017
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality

Pros: Great Slack alternative
Works good
Great app
We have been using Mattermost for quite a while now and are really happy with it

Mostly good, but I do feel it is a slightly lesser experience than some proprietary options.

Dec 19, 2017
4/5
Overall
3 / 5
Ease of Use
3 / 5
Features & Functionality
2 / 5
Customer Support
3 / 5
Value for Money
Likelihood to Recommend: 6.0/10 Not
Likely
Extremely
Likely

Pros: Open source and self hosted, I don't get irritated if slack goes down and I don't have to worry about my data security or my data just being lost of the company goes belly up. This is far and away our primary reason for using this instead of Slack,Hipchat,Cisco, etc.

It doesn't ask anywhere on this survey, but we use it for about 80 people, 60 staff and then various clients and contractors. We don't use many of the enterprise features, we just pay the licensing to support open source.

Cons: iOS and Android Apps are pretty idiocy, they're getting a bit better, but they are easily the worst part and I field lots of complaints about them. I would trade all new features and other fixes for faster and more reliable apps. The web interface is much better, but a bit buggy, nothing serious but little lags and quirks persist longer than I would expect.

The install process is also a bit silly, copy pasting files and such, a provided .deb or a custom apt repository would be 100x better and save me upgrade time and downtime. The lack of this is surprising considering almost all other software I use has this, even when it is free or small.

Overall: Control over our hosting and data

Almost really good.

Dec 19, 2017
3/5
Overall
4 / 5
Ease of Use
5 / 5
Features & Functionality
3 / 5
Customer Support
3 / 5
Value for Money
Likelihood to Recommend: 7.0/10 Not
Likely
Extremely
Likely

Pros: Slack integrations just work on Mattermost. The theme choices are very nice. The ability to host my own on-premises server is very nice. Technical support staff is very knowledgeable and competent. I'm not made to feel like an idiot if there is some specialized knowledge that I don't have.

Cons: The Android client is extremely buggy and fairly slow still. Selecting a push notice to open Mattermost to view and respond in the thread does not always open the right thread and is always slow (even on LAN, with the latest gen of Android phone!)). The client MUST be snappy and it just.. isn't.

The Windows client becomes slower and slower the longer you have it open, so it must be restarted every day or two. It's a little buggy; sometimes new messages make your view scroll up instead of down. But it works well enough most of the time.

Overall: Slack with AD integration at half the cost. But I still wish I could afford Slack.

Easy to use, easy to setup and easy to maintain.

Dec 19, 2017
4/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend: 8.0/10 Not
Likely
Extremely
Likely

Pros: easy to use
S3 backend
Good support of different databases
Quite easy to configure for the different needs of a company
I love the threaded reply, make it so much easier to follow multiple threads in the same channel.
Mobile notifications are quite useful
Mobile native app was quite welcomed, the previous one wasn't up to standard

Cons: some glitch in the mobile applications
Weird marketing decisions on which feature goes in which package
Can't see how many private channels are present (as the administrator of the server)

Overall: Complete control on our data. We also finally centralized all our communication and standardized it. No more private message, group private message and all that mess.

Lastly, we have couple of our product that are using incoming webhook to push important notifications.

I've enjoyed seeing Mattermost evolve.

Dec 19, 2017
4/5
Overall
1 / 5
Ease of Use
5 / 5
Features & Functionality
3 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 3.0/10 Not
Likely
Extremely
Likely

Pros: Being able to host an on-prem solution that can compete with Slack in many areas is great. I also appreciate it being open source.

Cons: The annoyance of getting free push notifications to work for non-hosted installations - organizations are forced to build & maintain their own compiled mobile apps, which introduces further administrative headaches.

I also didn't appreciate that the Android app is *not* a native app. It feels subpar.

Overall: I was able to run an on-prem chat solution briefly to enable my leadership to understand the enterprise collaboration platform options available to us.

I have been using mattermost tool to communicate internally in our organization. And its pretty easy

Dec 14, 2017
5/5
Overall
5 / 5
Ease of Use
4 / 5
Features & Functionality
4 / 5
Customer Support
4 / 5
Value for Money
Likelihood to Recommend: 9.0/10 Not
Likely
Extremely
Likely

Pros: Easy to use, Open source, ability to tag people in comments and respond with emojis (this makes it fun to work with colleagues). And being a open source we can easily customize to the needs of our organization.

Cons: The pricing of it seems to be a bit on high size. I'm able to keep more than 3 chats on the left panel, so have to search for people almost all the time to initiate a chat. Since there names offen disappears from the quick access panel.

Overall: Easy tool to collaborate with teams mates. It gives the feeling of using a social media interface within a professional organization.