Free
Nivo
Open SourceData Viz & Charts · Frontend
React dataviz components with rich chart types, server-side rendering support and built-in theming.
chartsreactdata-viz
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Data Viz & Charts · Frontend
React dataviz components with rich chart types, server-side rendering support and built-in theming.
Reference & Standards · Security
The canonical network scanner for auditing your own hosts and services.
Package Managers · Development Environment
Default Node.js package manager and the world's largest package registry.
Terminals & Shells · Development Environment
A modern shell that treats output as typed structured data — pipes over tables, JSON and CSV natively.
Frameworks · Frontend
The intuitive Vue framework for full-stack web apps and SSR.
UI Libraries · Frontend
Official Nuxt component library combining Reka UI primitives, Tailwind and Nuxt-friendly presets.
Package Managers · Development Environment
The standard Node Version Manager for POSIX shells.
Authentication · API Tools
Official resource for the OAuth 2.0 authorization framework.
Audio & Video · Image & Media
The free, open-source standard for screen recording and live streaming — scenes, filters and plugins.
Terminals & Shells · Development Environment
Popular open-source framework for managing Zsh configuration.
Cheatsheets & Learning · Git & Version Control
Plain-language recipes for recovering from common Git mistakes.
Models & LLM APIs · AI for Developers
Run open LLMs locally with one command.
Illustrations & Assets · Design & Prototyping
Hand-drawn character illustration library (CC0) — mix faces, poses and outfits into millions of combos.
Ecosystem · CSS Tools
Adam Argyle's supercharged CSS variables — a design-token library of easings, sizes, colors and shadows.
AI Coding Assistants · AI for Developers
Open-source AI coding agent for the terminal, model-agnostic.
Search Engines · Database
Community-driven, open-source fork of Elasticsearch and Kibana.
APM & Tracing · Monitoring & Observability
Vendor-neutral standard for traces, metrics and logs instrumentation.
Infrastructure as Code · DevOps
Open-source, Linux Foundation successor to Terraform.
Stock & Placeholders · Image & Media
Search engine for openly-licensed media across the web.
Smart Contracts · Web3 & Blockchain
The standard library of audited, secure smart contracts — ERC-20/721/1155 implementations, access control and upgrades.
Cheatsheets · Documentation & Learning
Collection of developer cheatsheets for many languages and tools.
Reference & Standards · Security
Open Worldwide Application Security Project: standards like the Top 10.
Reference & Standards · Security
Open-source web app security scanner for finding vulnerabilities in your own apps.
Accessibility · Testing
Open-source command-line accessibility testing tools.