Prometheus
Open source metrics collection, storage and alerting system
1048 tools in our directory are listed as open source, from 30 sections: Frameworks (89), Open Source (82), UI & Components (80), Dev Utilities (55) and 26 more sections.

Open source metrics collection, storage and alerting system

Open source tool for testing prompts and red teaming AI apps

Open source toolkit for building structured rich text editors


Open source server virtualization with clustering and storage

Free open source desktop app for building static websites

Infrastructure as code using common programming languages

JavaScript library for controlling Chrome and Firefox from code


Open-source vector database for AI search and retrieval

Java framework for fast, cloud-native apps with live reload

Turns Markdown and notebooks into articles, reports, slides and books

Vue framework for apps on web, mobile, desktop and extensions

Open source time-series database with fast SQL and live data

Developer cheat sheets for languages, tools and shortcuts

Generates typed models from JSON, JSON Schema and GraphQL

Open source log and trace search that runs on cloud object storage

Open source WYSIWYG rich text editor with a modular API


Movie collection manager that fetches new releases for you

Small calendar and contacts server using CalDAV and CardDAV

Peer-to-peer code collaboration on Git with no central host

Accessible, unstyled UI primitives for building your own components


Open source RAG engine with deep document parsing and agents

Meeting poll tool to find a time that works for everyone

Open source tool to manage many Kubernetes clusters in one place

Desktop app for running containers and local Kubernetes clusters

Open source framework for customer-facing AI agents and chatbots

Free open source web app that turns spreadsheet data into charts


Turn code snippets into styled images with syntax colors and themes

Command-line tool to sync and mount files across cloud storage


Adobe's hooks and components for accessible custom UI

Bootstrap components rebuilt as true React components

Flexible React date picker and calendar component

Unstyled React components for building email templates

Performant React form library with easy validation

Build native Android and iOS apps with React and JavaScript

Cross-platform UI toolkit for React Native apps

Native touch and gesture handling for React Native

Material Design components for React Native apps

Smooth animations that run on the UI thread in React Native

shadcn/ui-style components for React Native projects

2D graphics and drawing for React Native


Flexible React select input with search, multi-select and async
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