Open Source Top Lists
Ranked, GitHub-star-verified collections of the most popular open-source developer tools — each entry links to its repository.
20 Most Popular Open-Source AI Development Frameworks & LLMOps Tools
The most-starred open-source AI frameworks, LLM orchestration libraries and LLMOps platforms on GitHub — with maintainers, star counts and what each one is built for.
Read the list →Backend & Server20 Most Popular Open-Source Backend & Server Development Solutions
The most-loved open-source web frameworks and server runtimes — Node.js, Python, Java, Go, Ruby, .NET and more — with GitHub links, authors and star counts.
Read the list →Security & Pentest20 Most Popular Open-Source Security & Penetration Testing Tools
The most-starred open-source security and penetration-testing tools — scanners, exploit frameworks, secret detectors and network analyzers — with GitHub links and star counts.
Read the list →Database & Data20 Most Popular Open-Source Database & Data Processing Tools
The most-starred open-source databases, data warehouses and stream-processing engines — SQL, NoSQL, time-series, graph and vector — with GitHub links and star counts.
Read the list →Automation & Workflow20 Most Popular Open-Source Automation & Workflow Tools
The most-starred open-source automation, orchestration and workflow engines — no-code builders, job schedulers, GitOps and CI/CD — with GitHub links and star counts.
Read the list →Browser & Web Ext20 Most Popular Open-Source Browser & Web Extension Projects
The most-starred open-source browser extensions and web projects — ad/tracker blockers, password managers, devtools and canvas apps — with GitHub links and star counts.
Read the list →Code Quality & Debug20 Most Popular Open-Source Code Quality & Debugging Tools
The most-starred open-source linters, formatters and static-analysis tools — for JavaScript, Python, Go, Java, Ruby and Dockerfiles — with GitHub links and star counts.
Read the list →Frontend Build10 Most Popular Open-Source Frontend Build & Bundler Tools
The most-starred open-source bundlers and build tools — Vite, Webpack, esbuild, SWC, Rspack and more — with GitHub links, authors and star counts.
Read the list →API & Mock10 Most Popular Open-Source API & Mock Server Solutions
The most-starred open-source API clients, mock servers and contract tools — Prism, WireMock, Mockoon, MSW and more — with GitHub links and star counts.
Read the list →Terminal & CLI10 Most Popular Open-Source Terminal & CLI Developer Tools
The most-starred open-source CLI utilities that replace everyday defaults — shells, file managers, Git TUIs and benchmarks — with GitHub links and star counts.
Read the list →Testing & QA10 Most Popular Open-Source Testing & Automation Frameworks
The most-starred open-source testing and automation frameworks — Playwright, Cypress, pytest, Jest, k6 and more — with GitHub links and star counts.
Read the list →Charts & Viz10 Most Popular Open-Source Chart & Data Visualization Libraries
The most-starred open-source charting and data-visualization libraries — ECharts, Plotly, Recharts, Visx, Nivo and more — with GitHub links and star counts.
Read the list →UI & CSS20 Most Popular Open-Source UI & CSS Solutions
The world's most-loved open-source UI frameworks and CSS toolkits — with GitHub links, maintainers, star counts and what each one is best at.
Read the list →JavaScript20 Most Popular Open-Source JavaScript Libraries & Plugins
The most-used open-source JavaScript libraries and plugins — with GitHub links, authors, star counts and what each one does best.
Read the list →Developer Tools20 Most Popular Open-Source Developer Tools
The most-loved open-source developer tools — editors, terminals, search, version control and CLI utilities — with GitHub links, authors and star counts.
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