Freemium
Dagster
Open SourcePipelines & ETL · Data & Analytics
Modern data orchestrator with strong typing, testing and lineage.
orchestrationpipelinespython
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Pipelines & ETL · Data & Analytics
Modern data orchestrator with strong typing, testing and lineage.
UI Libraries · Frontend
Tailwind CSS component library with semantic class names.
Programming Languages
Official Dart language site with docs, packages and samples.
GUI Clients · Database
Free universal database GUI client supporting most engines.
GUI Clients · Database
Open-source database manager for SQL and NoSQL with web and desktop apps.
Pipelines & ETL · Data & Analytics
Analytics engineering: SQL-based transformation workflows with tests.
Models & LLM APIs · AI for Developers
AI research lab with strong open-weight reasoning models and API.
Frameworks · Backend
Secure-by-default JavaScript/TypeScript runtime with built-in tooling.
References · Documentation & Learning
Fast, offline-capable API documentation browser combining 100+ references.
Cheatsheets · Documentation & Learning
Rico's cheatsheets: concise cheatsheets for dozens of tools and languages.
Offline Toolkits · Developer Utilities
The developer swiss-army knife for Windows and macOS — JSON formatting, base64, JWT, regex and 30+ tools, fully offline.
Illustrations & Assets · Design & Prototyping
Avatar generator with 30+ styles — deterministic avatars from any seed via library, API or playground.
Agent & LLM Frameworks · AI for Developers
Open-source LLM app platform: agents, workflows and RAG (trending).
Markdown · PDF & Documents
Online Markdown editor with live preview and cloud sync.
Headless CMS · Backend
Open-source data platform that wraps any SQL database with APIs.
Frameworks · Backend
Batteries-included Python web framework with admin and ORM.
Documentation Generators · PDF & Documents
React-based static site generator optimized for documentation.
Self-Hosted PaaS · Cloud Platforms
Mini-Heroku powered by Docker: push-to-deploy on your own server.
NoSQL · Database
Modern Redis-compatible in-memory store built for multicore (trending).
ORMs · Backend
Lightweight, SQL-like TypeScript ORM with zero dependencies.
Relational · Database
Fast in-process analytical (OLAP) SQL database, like SQLite for analytics.
Search Engines · Database
Distributed search and analytics engine built on Apache Lucene.
Desktop Apps · Frontend
The framework behind VS Code and Slack for cross-platform desktop apps.
UI Libraries · Frontend
The classic Element UI rebuilt for Vue 3 — battle-tested desktop-first enterprise components.