Open source
Insomnia
Open source desktop client for testing HTTP, GraphQL and gRPC APIs
API ClientsOpen source API client
Alternatives to Requestly
12 tools like Requestly, chosen by what they do. About Requestly
Freemium
Apidog
All-in-one API platform for design, testing, mocking and docs
API ClientsAll in one API platform
Freemium
Freemium
Thunder Client
Fast REST and GraphQL API client for VS Code and JetBrains IDEs
API ClientsLightweight VS Code API client
Open source
Hoppscotch
Open source web app for building and testing API requests
API ClientsOpen source API tester
Open source
HTTPie
Friendly command-line and desktop client for testing HTTP APIs
API ClientsFriendly HTTP clientInactive
Open source
Yaak
Local-first desktop API client that stores requests as files in Git
API ClientsFast desktop API client
Open source
Open source
Altair GraphQL Client
Feature-rich desktop and web client for debugging GraphQL servers
GraphQL and RPCFeature rich GraphQL client
Open source
Step CI
Open source API testing framework with YAML workflows and CI support
Mocking TestingAPI testing and monitoringInactive
Freemium
Beeceptor
Hosted mock server builder for REST, SOAP, GraphQL and gRPC APIs
Mocking TestingHosted mock APIs
Open source
Mock Service Worker
API mocking library for browser and Node.js
Mocking TestingMock APIs at network level