Insomnia
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE, and gRPC, featuring Cloud, Local, and Git storage.
Looking for an open-source alternative to Hoppscotch? Below are 2 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE, and gRPC, featuring Cloud, Local, and Git storage.
yaak is an intuitive desktop API client designed for organizing and executing various types of API requests, including REST, GraphQL, WebSockets, Server Sent Events, and gRPC. Its interface prioritizes usability for developers seeking efficient workflows and robust API testing support.
The top picks from this list are Insomnia, Yaak — all maintained, free to use, and self-hostable.
Yes. Every tool listed here is open source and free to use. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Most of the alternatives listed are self-hostable. Check each tool's page for hosting details, system requirements, and licensing terms.
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