Free
Design Systems · Design & Prototyping
Google's open-source design system with guidelines and tokens.
design-systemmaterialgoogle
Browse the complete directory — use filters to narrow down.
Design Systems · Design & Prototyping
Google's open-source design system with guidelines and tokens.
UI Libraries · Frontend
React components implementing Google's Material Design.
MCP · AI for Developers
The open standard connecting AI models to tools and data sources.
Documentation Generators · PDF & Documents
Create books and docs from Markdown, made by the Rust community.
References · Documentation & Learning
The definitive reference for HTML, CSS and JavaScript, by Mozilla.
Search Engines · Database
Fast, typo-tolerant search engine with great defaults (trending).
Clients & GUIs · Git & Version Control
Open-source visual diff and merge tool.
UI Libraries · Frontend
Headless, accessible Svelte component builders — behavior only, you bring the styling.
NoSQL · Database
The classic, simple distributed memory object cache.
Other Formats · Data Formats
Efficient binary serialization format, JSON-like but compact.
Dashboards & BI · Data & Analytics
Open-source BI tool for dashboards and self-serve queries.
Wallets & Infrastructure · Web3 & Blockchain
The most used self-custody crypto wallet — browser extension and mobile, with Snaps extensibility and dApp permissions.
Penetration Testing · Security
The most widely used penetration testing framework: exploit modules, payloads and post-exploitation.
Favicons & Social Images · Image & Media
Preview and generate Open Graph and social meta tags.
Hyperscalers · Cloud Platforms
Microsoft's cloud platform with deep .NET and enterprise integration.
Relational · Database
Microsoft's enterprise relational database platform.
Payments · API Tools
Indonesia's leading payment gateway (GoTo): QRIS, VA, cards and more.
Vector Databases · AI for Developers
Highly scalable open-source vector database for billion-scale search.
Object Storage · Database
High-performance S3-compatible object storage, self-hostable.
Documentation Generators · PDF & Documents
Docs platform for API and product documentation — MDX-based, AI-assisted and hosted with analytics.
Whiteboards & Diagrams · Design & Prototyping
Collaborative online whiteboard for teams and workshops.
Package Managers · Development Environment
Polyglot runtime manager and task runner (modern asdf alternative).
Models & LLM APIs · AI for Developers
European AI lab offering open and commercial models with an API.
Stock & Placeholders · Image & Media
Free stock video, music tracks, sound effects and templates under the Mixkit license — no attribution needed.