Alternatives to Postman

Cross-platform API client for REST, GraphQL, gRPC

Insomnia is the API client that developers switch to when Postman gets too heavy. Clean interface, excellent GraphQL support, and native Git sync for version-controlling your collections.

Open source IDE for exploring and testing APIs

Bruno stores your API collections as plain text files in your Git repo. No cloud sync, no account, no telemetry — just `.bru` files alongside your code.

Open source API development ecosystem

Hoppscotch is Postman without the bloat, the account requirements, or the $30k enterprise invoices. Open source, browser-first, and you can send REST, GraphQL, or WebSocket requests in seconds with zero installation.