CodeStream
                
                CodeStream is an open-source extension for VS Code, Visual Studio, and JetBrains. CodeStream supercharges development workflows by putting collaboration tools in your IDE. It supports pull requests from GitHub, BitBucket and GitLab, issue management from Jira, Trello, Asana and 9 others, and provides code discussion that ties it all together, integrated with Slack, MS Teams, email, and in-editor notifications. Understand, review, and write code faster with CodeStream. Get answers as easy as “select the code, type your question." Save institutional knowledge where it belongs: with your source code. Integrates with Slack, Microsoft Teams, Email and offers in-editor notifications. Comment on code is as simple as: select the code, type your question. Code authors are automatically at-mentioned based on git blame info. Conversation threads are tied to code locations across branches and as new code merges in.
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                Firepad
                
                Firepad is an open source real-time collaborative text editor. It provides true collaborative editing, complete with intelligent operational transform-based merging and conflict resolution. Firepad can render documents using the CodeMirror, Ace, or Monaco editors, and its operational transform code borrows from ot.js. Behind the scenes, Firepad uses the Firebase Realtime Database for cloud data storage and synchronization. You can build any application that requires collaborative editing of text documents. Firepad supports both rich text and code editing out-of-the-box, and it's easy to extend for other use cases. Firepad was built by Michael Lehenbauer and the team at Firebase. There are many other features that could be added, please star Firepad on GitHub and send over a pull request when you have things to contribute! You can build any application that requires collaborative editing of text documents.
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                Code With Me
                
                Code With Me is a new collaborative coding and pair programming service. It makes it possible for you to invite others into your IDE project, and work on it together in real-time. Invite your teammate to investigate issues and review and work on code together online in real-time. Develop, debug, and fix code simultaneously with your whole team in a single remote collaborative IDE. Invite others to your project, so you can show and explain the code to them. A great fit for the classroom and online coding interviews. Just click the link that the host has shared with you, and you’re all set. No more repository downloading or pulling changes from someone else’s branch. Never again spend time setting up an environment, fixing compile-time exceptions, and resolving dependency headaches to get to someone’s current project state. As a guest, you don’t even need a JetBrains IDE installed.
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                Replit
                
                Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup. Start coding with your favorite language on any platform, OS, and device. Invite your friends, teammates, and colleagues right into your code with Google-docs like editing. Import, run, and collaborate on millions of GitHub repos with 0 manual setup. From Python, to C++, to HTML and CSS, stay in one platform to learn and code in any language you want. The second you create a new repl, it's instantly live and sharable with the world. Learn how to code from 3 million+ passionate programmers, technologists, creatives, and learners of all kinds. Make your team more productive with interactive docs, real-time collaboration, and 0-hassle remote interviewing. Create apps programatically, spin up bots and customize the IDE with plugins to fit your needs.
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