hoppscotch / hoppscotch
Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
hoppscotch / hoppscotch
usebruno / bruno
Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)
mountain-loop / yaak
The most intuitive desktop API client. Organize and execute REST, GraphQL, WebSockets, Server Sent Events, and gRPC 🦬
metersphere / metersphere
MeterSphere 是新一代的开源持续测试工具，内置 AI 助手，让软件测试工作更简单、更高效，不再成为持续交付的瓶颈。
postmanlabs / newman
Newman is a command-line collection runner for Postman
requestly / requestly
Community hub for Requestly API Client — bugs, feature requests, and roadmap. The privacy-first Postman alternative.
postmanlabs / postman-app-support
Postman is an API platform for building and using APIs. Postman simplifies each step of the API lifecycle and streamlines collaboration so you can create better APIs—faster.
fullstorydev / grpcui
An interactive web UI for gRPC, along the lines of postman
stoplightio / prism
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
Julien-cpsn / ATAC
A simple API client (postman like) in your terminal
Anil-matcha / awesome-open-source-saas-alternatives
Open source alternatives to paid SaaS apps: Notion, Slack, Auth0, Vercel and more. Curated list with licenses and GitHub stars.
foss42 / apidash
API Dash is a beautiful AI-powered open-source cross-platform (Desktop & Mobile) API Client built using Flutter which can help you easily create & customize your HTTP & GraphQL API requests, visually inspect responses and generate API integration code. A lightweight alternative to postman/insomnia.
microcks / microcks
The open source, cloud native tool for API Mocking and Testing. Microcks is a Cloud Native Computing Foundation incubating project 🚀
VoidenHQ / voiden
Design, Test and Document APIs in plain Markdown. Compose Requests with API blocks. Reuse, Replace & Version everything just like code. Offline, Truly Git Native, No Lock-in.
binance / binance-api-postman
Postman collection for Binance Public API, including spot, margin, futures, etc.
stepci / awesome-api-clients
List of awesome API clients. Postman and Insomnia alternatives
dromara / jquick-curl
jquick‑curl: Java library to run raw curl commands, support copy‑paste curl from Postman/Apifox/Browser DevTools, no need to write HTTP client code.
madneal / gshark
Scan for sensitive information easily and effectively.
postmanlabs / openapi-to-postman
Plugin for converting OpenAPI 3.0 specs to the Postman Collection (v2) format
lakernote / easy-postman
An open-source API debugging and stress testing tool inspired by Postman and a simplified JMeter, optimized for developers with a clean UI and powerful features.
chapar-rest / chapar
Fast, native API client for REST, gRPC, WebSocket and GraphQL. A local-first Postman alternative written in Go: no Electron, no account, no cloud.
apideck-libraries / portman
Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀
alexandrehtrb / Pororoca
An API testing tool with support for HTTP/2 and HTTP/3. Alternative to Postman.
Sunagatov / Iced-Latte
a online Marketplace for coffee retail (Backend)
furudo-erika / awesome-postman-alternatives
Awesome API Clients & Postman Alternatives (Open Source, Free, Pro)
plaid / plaid-postman
Postman collection for the Plaid API
postmanlabs / postman-collection
Javascript module that allows a developer to work with Postman Collections
Aditya369-tech / STACK-Forge-Ops
STACK-2026 Developer Guide: Build Modern Apps Step by Step in 2026
weihubeats / RustFox
A high-performance, local-first API client & Postman alternative built with Rust, Tauri 2, and Vue 3.高性能、本地优先的 API 调试与测试客户端 (Postman/Insomnia/ApiFox 替代品)，基于 Rust + Tauri 2 + Vue 3 打造。
finch-xu / GetCat
No Postman, Just GetCat! 用 Rust + GPUI 打造的原生跨平台 HTTP 接口调试工具
transmitworks / tropel
Load Testing Framework for testing Postman Collections and other JS scripts
HanzoDev30 / Ghostide
Fast ide for Android