The best alternatives to CodeSync are Repl.it, CodingView.io, and TryCode. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of CodeSync?
AssemblyAI— Speech-to-Text API with superhuman accuracy
CodingView makes it a breeze to run a successful coding interview. Don't waste time setting up a shared code editor or compiler. We've done it for you! - VS Code-like web code editor, - Live code sharing, - Supporting: Python, C++, Java and more.
TryCode is a realtime collaborative code editor. It's very fast! Just check it. Features: - Live mode - Run HTML and JS (ES6) code without reloading the page. - Password protection code. - Read only mode, which allows edit the code only you. - etc.
Codefile is a web app to share code in real time with other developers. It allows you to create collaborative code files for your technical interviews, pair programming, teaching, etc.
CodePile is a real-time, cooperative code sharing hub. Syntax highlighting and code completion, snapshot versioning, persistent chat and raw linkable code access make this a complete solution for quickly setting up an accessible online code library!
3Cols is a free cloud based snippet manager which can be used to store, share and collaborate on your code snippets. Designed with code reusability and increased productivity in mind.