Free
TypeORM
Open SourceORMs · Backend
Mature decorator-based ORM for TypeScript and JavaScript.
typescriptormnode.js
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ORMs · Backend
Mature decorator-based ORM for TypeScript and JavaScript.
Programming Languages
Typed JavaScript at scale. Official docs, playground and handbook.
Search Engines · Database
Open-source, in-memory search engine focused on developer experience.
Documentation Generators · PDF & Documents
Modern, fast typesetting system — a fresh alternative to LaTeX.
Web Analytics · Monitoring & Observability
Simple, self-hostable web analytics you own (trending).
Feature Flags · DevOps
Open-source feature flag platform you can self-host — strategies, gradual rollouts and an activation dashboard.
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.
UI Libraries · Frontend
The most popular Material Design component framework for Vue with a huge component set and grid system.
Web3 Libraries · Web3 & Blockchain
React hooks for Ethereum — typed, tree-shakeable wallet and contract interactions with multi-chain support.
Desktop Apps · Frontend
Desktop apps using Go backends and web frontends.
Vector Databases · AI for Developers
Open-source vector database with hybrid search and modules.
E2E & Browser · Testing
Next-gen browser and mobile test automation framework for Node.js.