Apps similar to Rustpad include Etherpad, which is free and open source. Other options are HackMD, collabedit, Plunker and CodeBunk. In total there are nine Code Editors like Rustpad for the web and self-hosting.
Etherpad is a highly customizable Open Source online editor providing collaborative editing in really real-time.
Germany
EU
HackMD is a browser-based, real-time collaborative markdown editor. It was inspired by hackpad but focuses more on speed and flexibility.
Taiwan
Real-time, browser based, collaborative text editor. It supports syntax highlighting for several programming languages, has integrated chat, requires no sign up and is very simple to use.
United States
Plunker is an online community for creating, collaborating on and sharing your web development ideas.
CodeBunk provides a Realtime Collaborative Editor with Compile/Run. CodeBunk is an Online Compiler/Interpreter for PHP, Python, Ruby, Perl, Lua, Javascript, C, C++. CodeBunk also has Peer-to-Peer Video/Audio chat facility.
Marble is a beautiful online Markdown editor and collaborative workspace. Write in Markdown, and a clean note will appear to greet you. You can share a link with collaborators and write together in real time. Add tables, code blocks, math, and Mermaid diagrams.
United Kingdom
Squad is a collaborative web-based code editor with one goal: to make it easy to open, edit, and share code in real time. Our powerful, secure tools include syntax highlighting, cloud hosting, a searchable chat log, and multiple syntaxes.
