Dev tools · alternatives · 2026
24 alternatives to Open-source in-browser code editor and REPL in 10+ languages
I am super excited to open-source the code executor behind logicboard.com - an in-browser collaborative code editor. The backend is written in Elixir+Phoenix and implements a WebSocket API to execute code in docker containers. Next steps include making this more secure, I am considering Google's gVisor to implement better isolation between containers and the host kernel.
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Open-source in-browser code editor and REPL in 10+ languages launched in 2023; newer entries below may have overtaken it.
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I am super excited to open-source the code executor behind logicboard.com - an in-browser collaborative code editor. The backend is written in Elixir+Phoenix and implements a WebSocket API to execute code in docker containers. Next steps include making this more secure, I am considering Google's gVisor to implement better isolation between containers and the host kernel.
2023 · github.com · its alternatives →
- 2IM
I made a Logicboard.com — A collaborative code editor with code-replay feature. Code-replay lets you run the coding session like a movie, I wrote a blog post on how I implemented this: https://logicboard.com/blog/code-replay You can try out the demo here: https://logicboard.com/demo/:replay And play around with the code editor here: https://logicboard.com/demo/ Logicboard also has an REPL shell, just type "start()" and hit enter in the output area.
2023 · logicboard.com · its alternatives →
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Repl.it▲399Code and deploy apps in any language right from your browser
2018 · replit.com · its alternatives →
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Leading Open Source API Development Platform for HTTP, REST, GraphQL, gRPC, SOAP, and WebSockets
2020 · insomnia.rest · its alternatives →
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Inspired by the design and UI/UX of apps like Notion, and utility of open-source apps like StackEdit, I decided to create a minimalistic, local-only WYSIWYG Markdown editor. Some features worth highlighting: - Monaco editor and Prettier integration for code snippets - Tables (apparently the holy grail of WYSIWYG editing) - Embeds (for CodePen, CodeSandbox and YouTube, most useful for HTML or JSON exports) - Accepts Markdown paste-in, and "exports"/generates HTML, Markdown and JSON outputs - Collaboration (with real-time awareness and initial commenting system, available only when…
2023 · editor.vrite.io · its alternatives →
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Hi HN! I've been working on a code editor and I think that it's mature enough to catch some interest. It's using a custom GPU accelerated GUI written in C++. Currently implements some interesting features: LSP, terminal, auto-completion, linters, formatters, custom keybindings, plugins and more. It's a hobby project but still intends to be an alternative to other popular code editors like Sublime, Kate, Lapce, Lite XL (and takes inspiration from them). The project was born as a playground for the GUI I'm developing (eepp GUI) and is advanced enough to currently be my main code editor, but…
2023 · github.com · its alternatives →
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Code.xyz▲378The online code editor for building APIs in a single click.
2018 · namekeeper.com · its alternatives →
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Open source rich text editor for the modern web. Contribute to Voog/wysihtml development by creating an account on GitHub.
2014 · github.com · its alternatives →
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Run KolibriOS, Linux or Windows 98 in your browser
2022 · copy.sh · its alternatives →
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Hey guys! I’ve been working on a web app called CodeCafé—a collaborative, browser-based code editor inspired by VS Code and Replit, but with no downloads, no sign-up, and zero setup. You just open the link and start coding—together. The frontend is built with React and TypeScript, and the backend runs on Java with Spring Boot, which handles real-time editing via WebSockets. For syncing changes, I’m using Redis along with a custom Operational Transformation system (no third-party libraries!!!). The idea came after I found out a local summer school was teaching coding using Google Docs (yes,…
2025 · github.com · its alternatives →
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Open Interpreter▲182Control your computer with natural language
2023 · openinterpreter.com · its alternatives →
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SharePad is a free online code interview tool, it has a real-time collaborative code editor, you can run code with built-in compilers.
2021 · sharepad.io · its alternatives →
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CoderPad▲77In-browser REPL and compiler for programmer interviews.
2014 · coderpad.io · its alternatives →
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CodeOrbital▲115Code, preview, share, and host with AI Power
2025 · codeorbital.vercel.app · its alternatives →
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Source Lair▲136SourceLair lets people develop software in their browsers.
2015 · sourcelair.com · its alternatives →
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You write a standard solution, just like on LeetCode, and run it through the CLI. It identifies the problem by ID or title, executes your code against local test cases, and shows the result. It currently supports around 1.4k problems and multiple languages, including Python, C++, Rust, Java, Go, TypeScript, Swift, and others. The project is still an MVP. System design, SQL, and concurrency problems are not supported yet, but support for more problem types is planned. Made in Haskell!
Aug 2026 · github.com · its alternatives →
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Hi HN! I’m so excited to show my first open-source project and first post here. I initially started this project to learn Go language, it is an experimental project. The main goal is to track the adventure of a WebRTC stream from start to finish, by debugging the project or tracking the output at console. By trying out this project, you will deep dive into the steps which are taken while starting up a WebRTC session, and more. It consists of a web UI (TypeScript) and a server back-end (Golang) projects. They can run on Docker containers, in development mode or production mode, you can find…
2022 · github.com · its alternatives →
- 24IM
Hey developers I think we're tired of copying and pasting our codes and sharing links using PasteBin, GithubGist, or Slack. What if you could share the codes without copying the link and share them right from your favorite editor? That was the motivation for creating TurboGist. Right now, it's still in the MVP stage, and I'm trying to gather feedback from developers like you. It's available as a beta in the VS Code Extension store. Can you guys check this out? It'd help me a lot. You don't need to pay any penny, 100% FREE. However, I'm working on introducing a self-hosted feature. Besides, a…
2025 · turbogist.dev · its alternatives →
Also compare
- Open-source in-browser code editor/executor with REPL, 10+ languages alternatives
- I made an in-browser code editor with code replay and REPL alternatives
- Repl.it alternatives
- Insomnia Designer – Open-source collaborative editor for API design alternatives
- An open-source, collaborative, WYSIWYG Markdown editor alternatives
- Ecode – A minimalist and fast open-source code editor alternatives
Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →