RexPad - Nimble collaborative note-taking.
Dive - Social space for remote teams
Indigrid - Plain text outliner with side-by-side views.
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
Etherpad - Etherpad is a highly customizable Open Source online editor providing collaborative editing in...
Plutoview - Shared browsing solution for remote group collaboration