Free
Theatre.js
Open SourceAnimation · Frontend
Motion design tool with a visual editor that attaches to JavaScript — keyframe anything on the web.
animationmotion3deditor
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Animation · Frontend
Motion design tool with a visual editor that attaches to JavaScript — keyframe anything on the web.
3D & WebGL · Frontend
The JavaScript 3D library — WebGL scenes, materials, lights and cameras with an enormous ecosystem.
Cheatsheets · Documentation & Learning
Community-maintained, practical examples for every CLI command.
JSON · Data Formats
Convert JSON into TypeScript, Zod, GraphQL, Kotlin, Go structs and more.
Data Viz & Charts · Frontend
React components and blocks built for dashboards — charts, KPI cards and grids on Tailwind.
Dependency Security · Security
All-in-one open-source vulnerability and misconfiguration scanner.
API Protocols · Backend
End-to-end typesafe APIs without schemas or code generation.
Build & Lint · Frontend
High-performance build system and cache for JavaScript monorepos.
ORMs · Backend
Mature decorator-based ORM for TypeScript and JavaScript.
Programming Languages
Typed JavaScript at scale. Official docs, playground and handbook.
Web Analytics · Monitoring & Observability
Simple, self-hostable web analytics you own (trending).
Ecosystem · CSS Tools
Instant on-demand atomic CSS engine with full customization.
Compression & Optimization · Image & Media
Free, open-source AI image upscaler for desktop — batch-enlarge images locally with Real-ESRGAN models.
Package Managers · Development Environment
Extremely fast Python package and project manager from Astral.
NoSQL · Database
Community-driven Redis fork under the Linux Foundation (trending).
Web3 Libraries · Web3 & Blockchain
Modern TypeScript interface for Ethereum — low-level primitives, ABI typing and multi-chain actions.
CSV · Data Formats
Terminal spreadsheet for exploring CSV, JSON, Excel and more.
Data Viz & Charts · Frontend
Airbnb's collection of low-level React visualization primitives combining D3 math with React components.
Build & Lint · Frontend
Next-generation frontend build tooling with instant dev server.
Documentation Generators · PDF & Documents
Vite-powered static site generator focused on docs.
Unit & Component · Testing
Fast, Vite-native unit test framework with Jest-compatible API.
Models & LLM APIs · AI for Developers
High-throughput, memory-efficient LLM inference and serving engine.
Frameworks · Frontend
Progressive JavaScript framework for building user interfaces.
Browser DevTools · Development Environment
Official Vue extension — component inspection, Pinia/Vuex state, router and performance profiling.