SyncIn

Sync.in desktop app is available for Windows, Mac OSX and Linux and has enhanced features for Pro users.

The desktop client lets users create new notes and launch notes directly from their desktop. When multiple people edit the same document simultaneously, any changes are instantly reflected on everyone's screen. The result is a new and productive way to collaborate and conference on text documents, useful for meeting notes, brainstorming, project planning, drafting sessions, training, and more.