Medium to large businesses that handle booking services
Timekit is fantastic at helping you build booking experiences online. Build your custom solutions with minimal work required.
Pros: A lot of customisations possible : available times, periods, employees
You can use it for agencies or salons
You can embed your calendar on your website, or else share the link by mail and personalise the variables on it
Cons: They recently changed their pricing, so there is no more free plan. It's a little bit more difficult to start with Timekit for little businesses now.