7 tools21 comparisons
Best API Testing & Clients Tools(2026)
Test, debug, and document REST, GraphQL, and gRPC APIs. We compared 7tools so you don't have to.
Postman
From $14/mo
World's leading API platform for testing and collaboration
GUI HTTP clientAutomated collectionsMock servers
Insomnia
From $0
API client for REST, GraphQL, and gRPC
REST/GraphQL/gRPC/WebSocketEnvironment variablesRequest chaining
Hoppscotch
From $0
Open-source, web-based API testing tool
Browser-basedREST/GraphQL/WebSocket/SSE/MQTTOpen source (MIT)
Bruno
From $0
Git-friendly open-source API client
File-based collections (Git-friendly)Offline-firstREST/GraphQL/SOAP
HTTPie
From $0
Human-friendly HTTP client for the terminal
CLI HTTP clientJSON-friendly syntaxSyntax highlighting
Swagger UI
From $0
Interactive API documentation from OpenAPI spec
OpenAPI renderingInteractive "Try it out"Auth support (OAuth/Bearer/Basic)
RapidAPI (Paw)
From $17/mo
Native macOS API client with advanced features
Native macOS appCode generation (30+ languages)Dynamic values
Head-to-head
API Testing & Clients Comparisons
Postman vs InsomniaPostman vs HoppscotchPostman vs BrunoPostman vs HTTPiePostman vs Swagger UIPostman vs RapidAPI (Paw)Insomnia vs HoppscotchInsomnia vs BrunoInsomnia vs HTTPieInsomnia vs Swagger UIInsomnia vs RapidAPI (Paw)Hoppscotch vs BrunoHoppscotch vs HTTPieHoppscotch vs Swagger UIHoppscotch vs RapidAPI (Paw)Bruno vs HTTPieBruno vs Swagger UIBruno vs RapidAPI (Paw)HTTPie vs Swagger UIHTTPie vs RapidAPI (Paw)Swagger UI vs RapidAPI (Paw)