Freemium
Scalar
Open SourceAPI Documentation · API Tools
Beautiful OpenAPI docs and modern API client, open source.
openapidocumentationapi-clienttrending
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API Documentation · API Tools
Beautiful OpenAPI docs and modern API client, open source.
Package Managers · Development Environment
Command-line installer for Windows focused on developer tools.
Web Scraping · Data & Analytics
Python's industrial-strength crawling framework — spiders, middlewares, throttling and pipelines built in.
Headers & CSP · Security
Scan any site's HTTP security response headers and get a grade.
E2E & Browser · Testing
The long-standing browser automation suite with broad language support.
Cheatsheets & Learning · Git & Version Control
The SemVer specification for meaningful version numbers.
Dependency Security · Security
Fast static analysis for finding bugs and vulnerabilities in code.
ORMs · Backend
Promise-based Node.js ORM for Postgres, MySQL, MariaDB and SQLite.
UI Libraries · Frontend
The shadcn/ui philosophy ported to Svelte: copy-paste components you own, built on Melt UI.
UI Libraries · Frontend
Copy-and-paste React components built on Radix and Tailwind.
Screenshots · Image & Media
Powerful open-source screenshot and screen recording tool for Windows.
Hosting & Collaboration · Git & Version Control
The badge service for READMEs — build status, version, downloads and custom badges as compact SVGs.
Design Systems · Design & Prototyping
Shopify's design system with components, tokens and guidance.
Queues & Streaming · Database
Ruby's most popular background job processor — simple, efficient and backed by Redis.
APM & Tracing · Monitoring & Observability
Open-source Datadog alternative built on OpenTelemetry.
Icons · Frontend
Free SVG brand icons for popular products and companies.
UI Libraries · Frontend
Adaptive design system for Svelte and React on Tailwind, with themes and accessible components.
API Testing · API Tools
API testing tool specialized in SOAP and REST services.
API Protocols · Backend
Reliable bidirectional realtime communication over WebSockets.
Programming Languages
Official Solidity language site for Ethereum smart contracts.
Frameworks · Frontend
Declarative UI library with fine-grained reactivity and no VDOM.
Clients & GUIs · Git & Version Control
Free Atlassian Git GUI for Windows and macOS.
Frameworks · Backend
The Java ecosystem for building production-grade applications.
Frameworks · Backend
Opinionated Spring setup for standalone production-ready apps.