Free
React Router
Open SourceFrameworks · Frontend
The standard router for React, now a full framework (v7).
reactroutingframework
Browse the complete directory — use filters to narrow down.
Frameworks · Frontend
The standard router for React, now a full framework (v7).
Animation · Frontend
Physics-based animation library for React — springs instead of durations for natural motion.
3D & WebGL · Frontend
A React renderer for Three.js — build scenes declaratively with components, hooks and the pmnd ecosystem.
Documentation Generators · PDF & Documents
Hosted documentation platform for Sphinx and MkDocs projects.
Favicons & Social Images · Image & Media
Generate all favicon formats with platform-by-platform previews.
Color Tools
Preview color palettes and fonts on a realistic website instantly.
Data Viz & Charts · Frontend
Composable charting library for React built on SVG with a declarative, component-based API.
Launchers & Automation · Developer Utilities
Free, open-source macOS window manager — snap and resize windows with keyboard shortcuts.
API Documentation · API Tools
OpenAPI linting, bundling and three-panel reference docs.
State & Forms · Frontend
Predictable state container for JavaScript apps with Redux Toolkit.
Browser DevTools · Development Environment
Time-travel debugging for Redux — replay actions, diff state and trace dispatched updates.
References · Documentation & Learning
Clear catalog of design patterns and refactoring techniques.
Inspiration & Galleries · Design & Prototyping
Adam Wathan and Steve Schoger's practical design guide for developers — spacing, hierarchy, color and depth.
Hosting & Collaboration · Git & Version Control
Browser extension with 200+ quality-of-life improvements for the GitHub interface.
Regex
Generate regular expressions from sample text matches.
Regex
Learn regular expressions step by step with interactive examples.
Regex
Visualize regular expressions as railroad diagrams.
Regex
Online regex tester with reference, cheatsheet and community patterns.
Comprehensive regex tutorial and reference for all flavors.
Frameworks · Frontend
Web-standard React framework merged into React Router v7.
Icons · Frontend
Open-source neutral-style system icon set with 3,000+ glyphs in outlined and filled styles.
Smart Contracts · Web3 & Blockchain
Browser IDE for Solidity — write, compile, deploy and debug contracts with zero local setup.
Design Tools · Design & Prototyping
One-click AI background removal for images.
PaaS & Edge · Cloud Platforms
Unified cloud to build and run apps, sites and databases.