Free
MessagePack
Open SourceOther Formats · Data Formats
Efficient binary serialization format, JSON-like but compact.
serializationbinarymsgpack
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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.
Favicons & Social Images · Image & Media
Preview and generate Open Graph and social meta tags.
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.
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.
SQL Tools
Free, structured SQL tutorial from basics to advanced analytics.
NoSQL · Database
Popular document-oriented NoSQL database with a flexible schema.
SSL & TLS · Security
Generate recommended TLS configurations for many servers.
Relational · Database
Widely-used open-source relational database owned by Oracle.
Agent & LLM Frameworks · AI for Developers
Fair-code workflow automation with native AI agent nodes.
Queues & Streaming · Database
Lightweight, high-performance messaging and microservices bus.
NoSQL · Database
The leading graph database with Cypher query language.
Serverless & BaaS · Database
Serverless Postgres with branching and scale-to-zero.
Generators · CSS Tools
Generate soft-UI (neumorphism) shadow CSS.
Web Servers & Proxies · DevOps
DigitalOcean's visual generator for performant Nginx configs.
Package Managers · Development Environment
Default Node.js package manager and the world's largest package registry.
Authentication · API Tools
Official resource for the OAuth 2.0 authorization framework.
Cheatsheets & Learning · Git & Version Control
Plain-language recipes for recovering from common Git mistakes.
Illustrations & Assets · Design & Prototyping
Hand-drawn character illustration library (CC0) — mix faces, poses and outfits into millions of combos.
Models & LLM APIs · AI for Developers
Self-hosted ChatGPT-style UI for Ollama and OpenAI-compatible APIs.
AI Coding Assistants · AI for Developers
Open-source AI software development agent platform.
Search Engines · Database
Community-driven, open-source fork of Elasticsearch and Kibana.