IDE and Code Editing

  • 3v4l - Free online PHP shell and snippet-sharing site, that runs your code in 300+ PHP versions
  • Android Studio — Android Studio provides the fastest tools for building apps on every type of Android device. Open Source IDE is free for everyone and the best Android app development. Available for Windows, Mac, Linux, and even ChromeOS!
  • AndroidIDE — An Open Source IDE to develop real, Gradle-based Android applications on Android devices.
  • Apache Netbeans — Development Environment, Tooling Platform and Application Framework.
  • apiary.io — Collaborative design API with instant API mock and generated documentation (Free for unlimited API blueprints and unlimited users with one admin account and hosted documentation).
  • BBEdit - BBEdit is a popular and extensible editor for macOS. Free Mode provides a powerful core feature set and an upgrade path to advanced features.
  • Binder - Turn a Git repo into a collection of interactive notebooks. It is a free public service.
  • BlueJ — A free Java Development Environment designed for beginners, used by millions worldwide. Powered by Oracle & simple GUI to help beginners.
  • Bootify.io - Spring Boot app generator with custom database and REST API.
  • Brackets - Brackets is an open-source text editor specifically designed for web development. It is lightweight, easy to use, and highly customizable.
  • cacher.io — Code snippet organizer with labels and support for 100+ programming languages.
  • Code::Blocks — Free Fortran & C/C++ IDE. Open Source and runs on Windows,macOS & Linux.
  • Cody - Free AI coding assistant that can write (Code blocks, autocomplete, unit tests), understand (knowledge of your entire codebase), fix, and find your code. Available for VS Code, JetBrains and Online.
  • codiga.io — Coding Assistant that lets you search, define, and reuse code snippets directly in your IDE. Free for individual and small organizations.
  • codesnip.com.br — Simple code snippets manager with categories, search and tags. free and unlimited.
  • cocalc.com — (formerly SageMathCloud at cloud.sagemath.com) — Collaborative calculation in the cloud. Browser access to full Ubuntu with built-in collaboration and lots of free software for mathematics, science, data science, preinstalled: Python, LaTeX, Jupyter Notebooks, SageMath, scikitlearn, etc.
  • code.cs50.io - Visual Studio Code for CS50 is a web app at code.cs50.io that adapts GitHub Codespaces for students and teachers.
  • codepen.io — CodePen is a playground for the front-end side of the web.
  • codesandbox.io — Online Playground for React, Vue, Angular, Preact, and more.
  • Components.studio - Code components in isolation, visualize them in stories, test them, and publish them on npm.
  • Eclipse Che - Web-based and Kubernetes-Native IDE for Developer Teams with multi-language support. Open Source and community-driven. An online instance hosted by Red Hat is available at workspaces.openshift.com.
  • fakejson.com — FakeJSON helps you quickly generate fake data using its API. Make an API request describing what you want and how you want it. The API returns it all in JSON. Speed up the go-to-market process for ideas and fake it till you make it.
  • GetVM — Instant free Linux and IDEs chrome sidebar. The free tier includes 5 VMs per day.
  • GitPod — Instant, ready-to-code dev environments for GitHub projects. The free tier includes 50 hours/month.
  • ide.goorm.io goormIDE is full IDE on cloud. multi-language support, Linux-based container via the fully-featured web-based terminal, port forwarding, custom URL, real-time collaboration and chat, share link, Git/Subversion support. There are many more features (The free tier includes 1GB RAM and 10GB Storage per container, 5 Container slots).
  • JDoodle — Online compiler and editor for more than 60 programming languages with a free plan for REST API code compiling up to 200 credits per day.
  • jetbrains.com — Productivity tools, IDEs and deploy tools (aka IntelliJ IDEA, PyCharm, etc). Free license for students, teachers, Open Source and user groups.
  • jsbin.com — JS Bin is another playground and code-sharing site of front-end web (HTML, CSS, and JavaScript. It Also supports Markdown, Jade, and Sass).
  • jsfiddle.net — JS Fiddle is a playground and code-sharing site of front-end web, supporting collaboration.
  • JSONPlaceholder Some REST API endpoints that return some fake data in JSON format. The source code is also available if you would like to run the server locally.
  • Lazarus — Lazarus is a Delphi-compatible cross-platform IDE for Rapid Application Development.
  • MarsCode - A free AI-powered cloud-based IDE.
  • micro-jaymock - Tiny API mocking microservice for generating fake JSON data.
  • mockable.io — Mockable is a simple configurable service to mock out RESTful API or SOAP web services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data.
  • mockaroo — Mockaroo lets you generate realistic test data in CSV, JSON, SQL, and Excel formats. You can also create mocks for back-end API.
  • Mocklets - an HTTP-based mock API simulator that helps simulate APIs for faster parallel development and more comprehensive testing, with a lifetime free tier.
  • Paiza — Develop Web apps in Browser without needing to set up anything. Free Plan offers one server with 24 24-hour lifetime and 4 hours of running time per day with 2 CPU cores, 2 GB RAM, and 1 GB storage.
  • Prepros - Prepros can compile Sass, Less, Stylus, Pug/Jade, Haml, Slim, CoffeeScript, and TypeScript out of the box, reloads your browsers and makes it easy to develop & test your websites so you can focus on making them perfect. You can also add your own tools with just a few clicks.
  • Replit — A cloud coding environment for various program languages.
  • SoloLearn — A cloud programming playground well-suited for running code snippets. Supports various programming languages. No registration is required for running code, but it is necessary when saving code on their platform. Also offers free courses for beginners and intermediate-level coders.
  • stackblitz.com — Online/Cloud Code IDE to create, edit, & deploy full-stack apps. Support any popular NodeJs-based frontend & backend frameworks. Shortlink to create a new project: https://node.new.
  • Sublime Text - Sublime Text is a popular, versatile, and highly customizable text editor used for coding and text editing tasks.
  • Visual Studio Code - Code editor redefined and optimized for building and debugging modern web and cloud applications. Developed by Microsoft.
  • Visual Studio Community — Fully-featured IDE with thousands of extensions, cross-platform app development (Microsoft extensions available for download for iOS and Android), desktop, web and cloud development, multi-language support (C#, C++, JavaScript, Python, PHP and more).
  • VSCodium - Community-driven, without telemetry/tracking, and freely-licensed binary distribution of Microsoft’s editor VSCode
  • wakatime.com — Quantified self-metrics about your coding activity using text editor plugins, limited plan for free.
  • Wave Terminal - Wave is an open-source, cross-platform terminal for seamless workflows. Render anything inline. Save sessions and history. Powered by open web standards. MacOS and Linux.
  • WebComponents.dev — In-browser IDE to code web components in isolation with 58 templates available, supporting stories, and tests.
  • PHPSandbox — Online development environment for PHP
  • WebDB - Free Efficient Database IDE. Featuring Server Discovery, ERD, Data Generator, AI, NoSQL Structure Manager, Database Versioning and many more.
  • Zed - Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
  • OneCompiler - Free online compiler supporting 70+ languages including Java, Python, C++, JavaScript.