Free
Mockoon
Open SourceAPI Mocking · API Tools
Easy, open-source tool to run mock REST API servers locally.
mockingrestapiopen-source
Browse the complete directory — use filters to narrow down.
API Mocking · API Tools
Easy, open-source tool to run mock REST API servers locally.
Editors & IDEs · Development Environment
Hyperextensible Vim-based text editor with built-in LSP support.
Web Servers & Proxies · DevOps
High-performance web server, reverse proxy and load balancer.
Reference & Standards · Security
The canonical network scanner for auditing your own hosts and services.
Package Managers · Development Environment
Default Node.js package manager and the world's largest package registry.
Terminals & Shells · Development Environment
A modern shell that treats output as typed structured data — pipes over tables, JSON and CSV natively.
Package Managers · Development Environment
The standard Node Version Manager for POSIX shells.
Terminals & Shells · Development Environment
Popular open-source framework for managing Zsh configuration.
Models & LLM APIs · AI for Developers
Run open LLMs locally with one command.
AI Coding Assistants · AI for Developers
Open-source AI coding agent for the terminal, model-agnostic.
Infrastructure as Code · DevOps
Open-source, Linux Foundation successor to Terraform.
Accessibility · Testing
Open-source command-line accessibility testing tools.
Documentation Generators · PDF & Documents
Universal document converter: Markdown to PDF, DOCX, HTML and more.
Package Managers · Development Environment
Fast, disk-efficient JavaScript package manager with strict dependencies.
Containers · DevOps
Daemonless, rootless container engine, Docker-compatible CLI.
Ecosystem · CSS Tools
Tool for transforming CSS with JavaScript plugins.
Hooks & Commits · Git & Version Control
Framework for managing and maintaining multi-language pre-commit hooks.
Agent & LLM Frameworks · AI for Developers
Open-source tool for testing and evaluating LLM prompts and models.
Package Managers · Development Environment
Simple Python version management for local and global interpreters.
Unit & Component · Testing
The de-facto testing framework for Python: plain asserts, powerful fixtures and a rich plugin ecosystem.
CLI Tools · Development Environment
Extremely fast, recursive line-oriented regex search tool (rg).
Build & Lint · Frontend
Module bundler optimized for libraries and tree-shaking.
Build & Lint · Frontend
Fast Rust-based webpack-compatible bundler.
CLI Tools · Development Environment
An extremely fast Python linter and formatter, written in Rust.