Free
Hono
Open SourceFrameworks · Backend
Ultrafast web framework that runs on any JS runtime and edge.
frameworkedgeweb-standardtypescript
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Frameworks · Backend
Ultrafast web framework that runs on any JS runtime and edge.
Frameworks · Frontend
Access modern browser features directly from HTML, no JS build needed.
Headers & CSP · Security
Mozilla's scanner that grades a site's security headers and config.
API Mocking · API Tools
HTTP request and response service for testing clients.
Illustrations & Assets · Design & Prototyping
Free modular people illustrations by Pablo Stanley — rotate limbs and mix outfits in a friendly flat style.
Design Systems · Design & Prototyping
Apple's design guidelines for iOS, macOS and other platforms.
Hooks & Commits · Git & Version Control
Modern Git hooks manager for JavaScript projects.
Ecosystem · CSS Tools
Free open-source Tailwind CSS components and blocks for marketing sites and e-commerce, copy-paste ready.
Internationalization · Frontend
The de-facto JavaScript i18n framework — namespaces, plurals, interpolation and plugins for every framework.
Icons · Frontend
Icon explorer that searches dozens of icon sets instantly and copies as SVG, component or data-URI.
Icons · Frontend
Unified framework for using 200,000+ icons from many icon sets.
Regex
Collection of ready-made regex snippets with visual explanations.
Conversion · Image & Media
Classic CLI suite for creating, editing and converting images.
Compression & Optimization · Image & Media
Free Mac app to optimize images without quality loss.
Design Tools · Design & Prototyping
Free, open-source professional vector graphics editor.
Orchestration · DevOps
The leading service mesh for traffic, security and observability.
Terminals & Shells · Development Environment
Feature-rich macOS terminal emulator with split panes and search.
APM & Tracing · Monitoring & Observability
Open-source distributed tracing platform, CNCF graduated.
Models & LLM APIs · AI for Developers
Open-source ChatGPT alternative that runs LLMs fully offline on your machine, with an OpenAI-compatible API.
Programming Languages
Official Java developer portal with documentation, tutorials and downloads.
Programming Languages
MDN reference and guides for JavaScript, maintained by Mozilla.
Minifiers · Developer Utilities
Free online JavaScript minifier with API access.
References · Documentation & Learning
The Modern JavaScript Tutorial — the deepest free JS reference from basics to advanced browser APIs.
CI/CD · DevOps
The classic open-source automation server for CI/CD.