Free
K9s
Open SourceOrchestration · DevOps
Terminal UI to interact with and manage Kubernetes clusters.
kubernetestuicli
Browse the complete directory — use filters to narrow down.
Orchestration · DevOps
Terminal UI to interact with and manage Kubernetes clusters.
Penetration Testing · Security
Debian-based Linux distribution shipping 600+ preinstalled penetration testing and forensics tools.
Screenshots · Image & Media
Beautiful open-source screen recorder for macOS — captures, trims and exports GIFs/MP4s with plugins.
Authentication · API Tools
Open-source identity and access management with SSO and SAML.
Terminals & Shells · Development Environment
Fast, GPU-based terminal with graphics support and layouts.
Programming Languages
Official Kotlin language site: docs, playground and standard library reference.
Cross-Platform · Mobile Development
Share Kotlin code across iOS, Android, desktop and web.
Orchestration · DevOps
Template-free customization of Kubernetes YAML manifests.
ORMs · Backend
Type-safe SQL query builder for TypeScript, no DSL required.
Agent & LLM Frameworks · AI for Developers
Build stateful, multi-agent AI applications as graphs.
Generators · CSS Tools
Interactive CSS Grid layout builder with code export.
Clients & GUIs · Git & Version Control
Simple, powerful terminal UI for Git commands.
Cheatsheets & Learning · Git & Version Control
Interactive visualization game for learning Git branching.
SSL & TLS · Security
Diagnose why Let's Encrypt certificate issuance fails for a domain.
Load & Performance · Testing
Google's automated audits for performance, SEO, a11y and best practices.
Internationalization · Frontend
Developer-friendly i18n for React and Node — readable message catalogs, macros and automatic extraction.
Models & LLM APIs · AI for Developers
Open-source LLM gateway: one API for 100+ providers.
Models & LLM APIs · AI for Developers
The C/C++ inference engine that runs LLMs everywhere, even laptops.
Load & Performance · Testing
Scalable user load testing written in Python.
Programming Languages
Official Lua website with reference manual and source.
Icons · Frontend
Beautiful, consistent open-source icon library with framework packages.
Mobile Backend & Services · Mobile Development
Simple YAML-driven UI testing for iOS and Android (trending).
Email · API Tools
Self-hosted email testing tool with a web UI, catches local mail.
CLI Tools · Development Environment
The classic build automation and task runner present everywhere.