Open Source Alternatives to Insomnia
An API development and testing platform that enables collaborative design, debugging, mocking, and automated testing of HTTP, gRPC, GraphQL, and other APIs, with AI-powered features and version control integration.
Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Insomnia give you an option you fully own. Run them on your own server or desktop, so your data stays under your control. This page lists 4 open source alternatives to Insomnia. The most popular are Hoppscotch, Bruno and Yaak. Most use the MIT or Apache-2.0 license, and 3 offer an official Docker image.
Hoppscotch
Test, debug, and document APIs using a lightweight client that supports multiple protocols and team collaboration.
Bruno
An offline API client that stores collections on the local filesystem for version control via Git.
Yaak
A privacy-first desktop API client supporting REST, GraphQL, gRPC, and WebSockets with local-only data storage and Git integration.
Voiden
An offline API workspace that uses plain text files to unify requests, documentation, and tests.
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