Hoppscotch
Open source API development ecosystem, serving as an efficient and open-source alternative to Postman and Insomnia.
Looking for an open-source alternative to Insomnia? Below are 5 community-built tools that offer similar functionality — all free, open source, and ready to use or self-host. Ranked by GitHub stars.
Open source API development ecosystem, serving as an efficient and open-source alternative to Postman and Insomnia.
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.
GraphiQL & the GraphQL LSP Reference Ecosystem designed to enhance the development experience by providing tools for building browser and IDE integrations for GraphQL.
An integrated development environment (IDE) to enhance GraphQL development workflows, featuring GraphQL Subscriptions, interactive documentation, and collaboration tools.
mkinf SDK to seamlessly interact with mkinf hub MCP servers, enabling efficient server communication.
The top picks from this list are Hoppscotch, Yaak, GraphiQL — 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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