Best CircleCI Alternatives

High-performance build system for JavaScript and TypeScript monorepos

Programmable CI/CD pipelines as code in Go, Python, TypeScript, or Java. Runs locally and on any CI provider.

Microsofts open-source end-to-end browser testing framework for Chromium, Firefox, and WebKit with one API.

Git-friendly, fully offline API client that stores collections as plain text files in your repository.

Hybrid CI/CD where the control plane is hosted but the build agents run on your own infrastructure.

Open-source workshop for building UI components in isolation. Preview, document, and test them outside the app.

API client and collaboration platform that started as a Chrome extension and now covers design, testing, and mocking.

Open-source API client for REST, GraphQL, gRPC, and WebSockets. Postmans more polished, less corporate cousin.