Best Programming Tools in 2025

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

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

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

Welcome to the fantastic world of nerdy regex fun!

Key Regex Crossword features:

Strengthening Regex Skills Entertainment Educational Tool User Interface

Online playground for React

Key CodeSandbox features:

Ease of Use Instant Collaboration Pre-configured Environments Integrated Development

Open Source

RegexOne offers learning regular expressions with simple, interactive examples.

Key RegexOne features:

Interactive Learning Beginner Friendly Free Access Language Support

A ruby based regular expression editor

Key rubular features:

Immediate Feedback Simple Interface Ruby-Based Offline Syntax Help

Free ebook for the JS Beginners

Key Eloquent JavaScript features:

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

Open Source

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

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