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API clients

Build, send and share HTTP, GraphQL and gRPC requests from a desktop or browser app, or call gRPC services from the command line.

Im Vergleich

API clients
ToolSterneLizenzBedingungenSelbst hostbarSpracheNeuestes ReleaseLetzter Push
Probe66Apache-2.0Open SourceNeinRustv2.4.32026-11-10
Hoppscotch81kMITOpen SourceNeinTypeScript2026.10.12026-11-05
Bruno48kMITOpen SourceNeinJavaScriptv4.3.02026-11-11
Insomnia40kApache-2.0Open SourceNeinTypeScriptcore@13.4.02026-11-12
Yaak19kMITOpen SourceNeinRustv2026.9.12026-11-11
gRPCurl13kMITOpen SourceNeinGov1.9.42026-11-02
Posting13kApache-2.0Open SourceNeinGo2.11.22026-10-16
Requestly6.8kOtherOpen SourceNeinUnbekanntchangelog-2026.03.232026-11-11
REST Client6.1kMITOpen SourceNeinTypeScriptv0.25.02026-04-23
gRPC UI5.9kMITOpen SourceNeinJavaScriptv1.5.42026-11-02
ATAC3.8kMITOpen SourceNeinRustv0.24.02026-10-19
Restfox2.8kMITOpen SourceNeinTypeScriptv0.42.02026-11-10
Slumber1.2kMITOpen SourceNeinRustv5.4.42026-11-11

13 Tools

Probe

A fast, native, local-first API client and Postman alternative for macOS, Windows and Linux, with a CLI for CI and AI agents. Built with Rust and GPUI, using OpenCollection YAML.

Sprache
Rust
Lizenz
Apache-2.0
Sterne
66
Neuestes Release
v2.4.3
Letzter Push
2026-11-10
Hoppscotch

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Sprache
TypeScript
Lizenz
MIT
Sterne
81k
Neuestes Release
2026.10.1
Letzter Push
2026-11-05
Bruno

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

Sprache
JavaScript
Lizenz
MIT
Sterne
48k
Neuestes Release
v4.3.0
Letzter Push
2026-11-11
Insomnia

The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.

Sprache
TypeScript
Lizenz
Apache-2.0
Sterne
40k
Neuestes Release
core@13.4.0
Letzter Push
2026-11-12
Yaak

The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬

Sprache
Rust
Lizenz
MIT
Sterne
19k
Neuestes Release
v2026.9.1
Letzter Push
2026-11-11
gRPCurl

Like cURL, but for gRPC: Command-line tool for interacting with gRPC servers

Sprache
Go
Lizenz
MIT
Sterne
13k
Neuestes Release
v1.9.4
Letzter Push
2026-11-02
Posting

The modern API client that lives in your terminal.

Sprache
Go
Lizenz
Apache-2.0
Sterne
13k
Neuestes Release
2.11.2
Letzter Push
2026-10-16
Requestly

Community hub for Requestly API Client — bugs, feature requests, and roadmap. The privacy-first Postman alternative.

Sprache
Unbekannt
Lizenz
Other
Sterne
6.8k
Neuestes Release
changelog-2026.03.23
Letzter Push
2026-11-11
gRPC UI

An interactive web UI for gRPC, along the lines of postman

Sprache
JavaScript
Lizenz
MIT
Sterne
5.9k
Neuestes Release
v1.5.4
Letzter Push
2026-11-02
ATAC

A simple API client (postman like) in your terminal

Sprache
Rust
Lizenz
MIT
Sterne
3.8k
Neuestes Release
v0.24.0
Letzter Push
2026-10-19
Restfox

Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop

Sprache
TypeScript
Lizenz
MIT
Sterne
2.8k
Neuestes Release
v0.42.0
Letzter Push
2026-11-10
Slumber

Terminal-based HTTP/REST client

Sprache
Rust
Lizenz
MIT
Sterne
1.2k
Neuestes Release
v5.4.4
Letzter Push
2026-11-11

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