Campfire
by 37signals
Campfire is a web-based group chat tool that lets you set up password-protected chat rooms in just seconds. Invite a client, colleague, or vendor to chat, collaborate, and make decisions. Link to a room on your intranet for internal communications. Campfire is especially great for groups with remote workers. There's no better way to keep everyone together when everyone's apart. It's as simple as visiting a web page.
