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3v4l.org favicon

Run PHP code in 250+ versions online instantly

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Test and compare your PHP code online across 250+ PHP versions. Instantly see output, stats, and compatibility for any script, right in your browser.

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Write and run Prolog code instantly in your browser

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Run, test, and experiment with Prolog code right in your browser using this JavaScript-based Prolog interpreter—no installation required.

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Test and debug regex instantly online

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Test and debug regular expressions online for JavaScript, PHP, and PCRE. Instantly see matches and results to refine your regex with ease.

bpython-interpreter.org favicon

Interactive Python coding with smart features

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bpython offers an enhanced Python interpreter with an easy-to-use interface, code completion, and helpful features for interactive Python coding.

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Write and test Python code interactively

36%

IPython offers an interactive computing environment for Python, making it easy to write, test, and visualize code for data analysis and research.

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View assembly output from your code in real time

36%

Compile and explore C++, Rust, Go, and more online, instantly seeing the generated assembly code and comparing outputs across multiple compilers.

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See real-time assembly output as you code

36%

Compiler Explorer lets you write code in languages like Rust, C++, and Go, and instantly see the compiled assembly output online for learning or analysis.

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Run and share code in 70+ languages online

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Ideone.com lets you write, compile, and run code in 70+ programming languages online—test ideas, debug, and share code easily from your browser.

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Test and learn regex with instant feedback

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RegExr lets you build, test, and learn regular expressions with real-time feedback, syntax highlighting, and helpful community patterns.

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See code compile to assembly in real time

34%

Try code online and instantly see assembly output for C++, Rust, Go, and more. Explore how your code compiles and learn from real-time results.

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Run Python code instantly in your browser

33%

Write, run, and share Python code instantly in your browser with this easy-to-use online IDE—no installation or local setup required.

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Run and test .NET code instantly

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LINQPad lets you write, test, and run C#, F#, and VB code instantly. Explore databases, experiment with code, and debug in a quick, flexible workspace.

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Run and share code in 70+ languages instantly

32%

Write, run, and share code online in 70+ languages with OneCompiler. Practice coding, test programs, and embed code editor features on your website.

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Run and edit code instantly in 25+ languages

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A lightweight macOS programming editor supporting 25+ languages for instant code running and easy coding.

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Collaborate on code in real time with AI support

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Zed is a fast, next-gen code editor with multiplayer features and AI assistance, built for seamless coding and real-time collaboration.

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Code faster with AI-powered editing

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Cursor is an AI-powered code editor that helps you write, edit, and manage code efficiently, offering smart features to boost your productivity.

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Visualize code execution and get instant AI help

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Python Tutor lets you write, run, and debug Python, Java, C, C++, and JavaScript code online with visual step-by-step help and AI-powered tutoring.

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Boost coding speed with AI-powered editing

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Windsurf is an AI-powered code editor and assistant designed to help developers write, edit, and manage code faster and more efficiently.

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Test and debug regex instantly online

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Build, test, and debug regular expressions online with instant feedback, syntax highlighting, and helpful explanations for multiple programming languages.

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Edit code and text for free on Windows

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Notepad++ is a free source code editor and Notepad replacement for Windows, supporting multiple programming languages and easy text editing.

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Edit code and text with speed and style

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Sublime Text is a fast, feature-rich text editor for code, markup, and prose, offering a sleek interface and powerful tools for developers and writers.

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Edit text and code natively on your Mac

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CotEditor is a clean, user-friendly text editor built specifically for macOS, offering a native experience for editing plain text and code files.

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Edit and preview web code in real time

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Brackets is a free, open-source code editor designed for web development, offering live preview and smart editing tools for HTML, CSS, and JavaScript.

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Edit code with a modern, modal interface

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Helix is a modern, modal text editor designed for developers, offering efficient editing features inspired by classic editors with a fresh approach.

crisp.com favicon

Edit large code files across multiple platforms

21%

CRiSP is a programmers text editor for Unix, Linux, Windows, and Mac, offering powerful editing for large files and multiple languages.

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Test Alexa skills without an Echo device

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Echosim.io lets developers test Alexa skills online, simulating Amazon Echo devices without needing physical hardware. Easy, browser-based tool.

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Edit and manage code with powerful tools

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BBEdit is a fast, professional text and code editor for macOS, offering powerful tools and productivity features for developers and writers.

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Embed a powerful code editor in your website

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CodeMirror is a flexible code editor component for the web, offering powerful editing features and easy integration for building interactive coding tools.

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Collaborate on LaTeX documents online in real time

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Overleaf is an online LaTeX editor for easy document creation, real-time collaboration, and access to templates—no installation needed.

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Edit text easily in your terminal

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GNU nano offers a simple, easy-to-use text editor for the terminal with features like syntax highlighting, spell check, and undo/redo.

Worldwide Rubular.com Alternatives

emacs-lsp.github.io favicon

Boost Emacs with intelligent code features

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Learn how to set up and use LSP Mode in Emacs for smarter code editing, language support, and enhanced development workflows with detailed guides.

pyzo.org favicon

Interactive Python IDE for all platforms

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Pyzo is a free, open-source Python IDE that offers an interactive editor, shell, and tools for coding with any Python interpreter on your system.

cider.mx favicon

Interactive Clojure development in Emacs

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CIDER is an interactive development environment for Clojure and ClojureScript, helping you write, test, and debug code efficiently within Emacs.

continue.dev favicon

Build custom AI code assistants in your IDE

27%

Continue is an open-source AI code assistant that lets you build, share, and use custom autocomplete and chat tools right inside your favorite IDE.

jedit.org favicon

Customize your code editor with powerful plugins

20%

jEdit is a free programmer's text editor for coding, featuring a wide range of plugins and customization options for developers on any platform.

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Write and run Rust code instantly online

20%

Try out Rust code in your browser, experiment with examples, and see instant results—no installation needed. Great for learning and quick testing.

aquamacs.org favicon

Emacs tailored for Mac with native integration

20%

Aquamacs is a user-friendly Emacs-based text editor for Mac, supporting coding, LaTeX, and more, designed to work seamlessly with macOS features.

kate-editor.org favicon

Edit multiple files with powerful tools

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Kate is a modern, feature-rich text editor for editing and viewing multiple files at once, with tabs, split views, and powerful plugins for developers.

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Edit code on your iPad with syntax highlighting

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Edit code and text files on your iPad or iPhone with syntax highlighting, remote file access, and seamless integration with FTP, SFTP, and cloud storage.

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Edit code with a customizable macOS editor

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TextMate is a powerful, customizable text editor for macOS that supports many programming languages and is available as open source software.

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