Best Programming Tools in 2026

RegExr.com is an online tool to learn, build, and test Regular Expressions.

Key RegExr features:

User-Friendly Interface Real-time Feedback Built-in Cheatsheet Community Examples

Open Source

Shared cloud environments for AI coding agents. Run Claude Code, Cursor CLI, Codex, and Gemini CLI from any device, API, or automation tool.

Key CloudCLI features:

Multi-Agent Support Git Integration Persistent Cloud Sessions Web UI & Mobile App

Try for free Open Source paid Free Trial €7.0 / Monthly

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.

Key regular expressions 101 features:

Interactive Learning Extensive Documentation Error Highlighting Quick Reference

Code, create, andlearn together. Use our free, collaborative, in-browser IDE to code in 50+ languages — without spending a second on setup.

Key replit features:

Ease of Use Collaborative Coding Supports Multiple Languages Cloud-Based

A front end web development playground.

Key CodePen features:

Real-time Collaboration Immediate Visual Feedback Integrated Development Environment (IDE) Community-Driven

Welcome to the fantastic world of nerdy regex fun!

Key Regex Crossword features:

Strengthening Regex Skills Entertainment Educational Tool User Interface

Test your JavaScript, CSS, HTML or CoffeeScript online with JSFiddle code editor.

Key JSFiddle features:

Easy Sharing and Collaboration Real-Time Editing Supports Multiple Frameworks Embed Feature

Extension for Visual Studio - A set of extensions to Visual Studio 2012 Professional (and above) which improves developer productivity.

Key Productivity Power Tools features:

Enhanced Features Customization Options Improved Code Navigation Refactoring and Formatting

Open Source

RegexOne offers learning regular expressions with simple, interactive examples.

Key RegexOne features:

Interactive Learning Beginner Friendly Free Access Language Support

Online playground for React.

Key CodeSandbox features:

Ease of Use Instant Collaboration Pre-configured Environments Integrated Development

Open Source

Free ebook for the JS Beginners.

Key Eloquent JavaScript features:

Comprehensive Learning Resource Interactive Code Examples Free Online Access Engaging Writing Style

Open Source

An extendable version manager.

Key asdf-vm features:

Versatility Unified Interface Plugin Ecosystem Convenient Version Management

Open Source

Node.js is a platform built on Chrome's JavaScript runtime for easily building fast, scalable network applications.

Key Node.js features:

Asynchronous and Event-Driven JavaScript Everywhere Large Community and NPM High Performance

Build and debug modern web and cloud applications, by Microsoft.

Key VS Code features:

Cross-platform Extensibility Integrated Git Performance

Open Source