Free
Flameshot
Open SourceScreenshots · Image & Media
Cross-platform screenshot tool with annotation built in.
screenshotannotationlinux
Browse the complete directory — use filters to narrow down.
Screenshots · Image & Media
Cross-platform screenshot tool with annotation built in.
Frameworks · Backend
Lightweight Python micro-framework for web applications.
Learning & Reference · CSS Tools
Learn Flexbox by guiding frogs to lily pads in a fun game.
Ecosystem · CSS Tools
Component library for Tailwind CSS — 600+ components, Figma kit and admin dashboard templates.
Agent & LLM Frameworks · AI for Developers
Drag-and-drop builder for LLM apps and agents on LangChain.
Design Systems · Design & Prototyping
Microsoft's cross-platform design system.
CI/CD · DevOps
GitOps toolkit for keeping Kubernetes clusters in sync with Git.
PaaS & Edge · Cloud Platforms
Run full containers close to users on servers around the world.
Migrations & ERD · Database
Version control for your database schema migrations.
Icons · Frontend
The web's most popular icon library and toolkit.
Typography & Fonts · Design & Prototyping
Indian Type Foundry's free font service — professionally designed families, free for commercial use.
Typography & Fonts · Design & Prototyping
Self-host open-source fonts as npm packages — versioned, offline-friendly and dependency-pinned.
Hosting & Collaboration · Git & Version Control
Community-driven, self-hosted software forge (powers Codeberg).
Clients & GUIs · Git & Version Control
Fast and friendly Git client for Windows and macOS.
Internationalization · Frontend
Internationalization toolkit built on ICU MessageFormat — react-intl and friends for dates, numbers and plurals.
Smart Contracts · Web3 & Blockchain
Blazing-fast Ethereum toolkit in Rust — forge tests in Solidity, anvil local chain and cast for contract calls.
Design Tools · Design & Prototyping
Design and publish production-ready websites visually.
Animation · Frontend
Production-ready motion library for React and vanilla JS.
Courses & Tutorials · Documentation & Learning
Non-profit curriculum with free courses and certifications.
Other Formats · Data Formats
Free online formatters, validators, encoders and escape tools.
Stock & Placeholders · Image & Media
Collaborative database of CC-licensed sound effects and samples — the go-to library for UI sounds and foley.
CLI Tools · Development Environment
General-purpose command-line fuzzy finder.
Load & Performance · Testing
Load testing with a powerful Scala-based DSL and great reporting.
References · Documentation & Learning
Large computer science portal with tutorials and interview content.