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API Clients
Tools for testing, developing, and documenting REST, GraphQL, and gRPC APIs.
Trending in API Clients
Bruno
Bruno is an open-source, offline-first API client replacing Postman and Insomnia by storing request collections directly as plain text files in Git.
48.0k+673macOSWindowsLinuxtoday
MITAPI Clients
Hoppscotch
Hoppscotch is an open-source API client replacing Postman with a lightweight web interface, Tauri desktop app, and self-hosted Docker deployment.
80.7k+157WebDocker
Yaak
Yaak is an open-source desktop API client alternative to Postman, offering local-first REST, GraphQL, and gRPC workflows with native Git sync.
19.4k+117LinuxmacOSWindows
Voiden
Voiden is an open-source, Git-native API workspace that replaces Postman with Markdown-based request files, reusable blocks, and automated CLI testing.
2.0k+115LinuxmacOS
12 tools found
Hoppscotch
Hoppscotch is an open-source API client replacing Postman with a lightweight web interface, Tauri desktop app, and self-hosted Docker deployment.
80.7kWebDocker3d ago
MITAPI Clients
Bruno
Bruno is an open-source, offline-first API client replacing Postman and Insomnia by storing request collections directly as plain text files in Git.
48.0kmacOSWindowsLinuxtoday
MITAPI Clients
Insomnia
Insomnia is an open-source API client replacing Postman with faster multi-protocol debugging, Git-based collection syncing, and local-first data privacy.
40.1kLinuxmacOSWindowstoday
Apache-2.0API Clients
Yaak
Yaak is an open-source desktop API client alternative to Postman, offering local-first REST, GraphQL, and gRPC workflows with native Git sync.
19.4kLinuxmacOSWindows2d ago
MITAPI Clients
Mockoon
Mockoon is a local-first mock API server that replaces cloud dependencies with an offline desktop GUI, headless CLI, and zero account requirements.
8.5kLinuxmacOSWindows2d ago
MITAPI Clients
Requestly
Requestly is a local-first Postman alternative for testing REST, GraphQL, and gRPC APIs with Git-based collection sync and zero mandatory cloud login.
6.8kDockerLinuxtoday
API Clients
ES
PromotedEdgar Sipki
Go & gRPC engineer · founder of EasyP
Mentoring for backend developers. Consulting for startups.
Go, gRPC and Protobuf done right, LLM agents in production, and the hard parts of shipping a first product.
GogRPCProtobufLLM agents
sipki.online
HTTPie
HTTPie replaces Postman with a privacy-focused, local-first API client that tests REST and GraphQL endpoints offline without mandatory cloud accounts.
4.1k2y ago
BSD-3-ClauseAPI Clients
Firecamp
Firecamp is an open-source API client that replaces Postman for testing REST, GraphQL, and WebSockets without per-seat subscription fees.
2.6kmacOSWindowsLinux8mo ago
AGPL-3.0API Clients
Voiden
Voiden is an open-source, Git-native API workspace that replaces Postman with Markdown-based request files, reusable blocks, and automated CLI testing.
2.0kLinuxmacOSWindows1d ago
Apache-2.0API Clients
Yaade
Self-hosted API development environment replacing Insomnia and Hoppscotch Pro with on-premise multi-user collaboration and zero cloud dependencies.
2.0kDockerLinux1y ago
MITAPI Clients
Milkman
Milkman is an open-source API workbench replacing heavy desktop clients with fast JavaFX startup, offline local storage, and multi-protocol plugins.
1.3kmacOSWindowsLinux7d ago
MITAPI Clients
Cartero
Cartero is a native Linux and desktop HTTP client replacing Postman for offline API testing, using local Git-friendly files and zero cloud accounts.
1.1kLinux14d ago
GPL-3.0API Clients