HedgeDoc : HedgeDoc (formerly known as CodiMD) is an open-source, web-based, self-hosted, collaborative markdown editor.
You can use it to easily collaborate on ...
Mind42 : Collaborative mind mapping in your browser
openDAW : openDAW is a next-generation web-based Digital Audio Workstation (DAW) designed to democratize music production and to resurface the process of making...
Etherpad is an Open Source online editor providing collaborative editing in really real-time powered by Node.js
