Open-source alternatives to Postman

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

↔ alternative to Postman

Open-source IDE for exploring and testing APIs — Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

↔ alternative to Postman

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

↔ alternative to Postman

Visual API management and testing platform. — YApi 是一个可本地部署的、打通前后端及QA的、可视化的接口管理平台

↔ alternative to Postman

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

↔ alternative to Postman、Insomnia

Run and test HTTP requests with plain text. — Hurl, run and test HTTP requests with plain text.

↔ alternative to Postman

Modern OpenAPI docs and API client platform. — Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

↔ alternative to Swagger UI、Postman

A modern API client that lives in your terminal. — The modern API client that lives in your terminal.

↔ alternative to Postman

Kubernetes security scanning and compliance tool — Kubescape is an open-source Kubernetes security platform for your IDE, CI/CD pipelines, and clusters. It includes risk analysis, security, compliance, and misconfiguration scanning, saving Kubernetes users and administrators precious time, effort, and resources.

↔ alternative to Jira、Postman

An interactive command-line HTTP client. — An interactive command-line HTTP and API testing client built on top of HTTPie featuring autocomplete, syntax highlighting, and more. https://twitter.com/httpie

↔ alternative to Postman

GraphQL IDE for queries, docs and subscriptions — 🎮 GraphQL IDE for better development workflows (GraphQL Subscriptions, interactive docs & collaboration)

↔ alternative to Postman

Design and run mock APIs locally — Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

↔ alternative to Postman

MySQL and MariaDB database management for macOS — MySQL/MariaDB database management for macOS

↔ alternative to Postman

Command-line runner for Postman API collections. — Newman is a command-line collection runner for Postman

↔ alternative to Postman

Cross-platform API debugging and capture tool — Reqable issue track repo

↔ alternative to Postman、Charles Proxy

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

↔ alternative to Postman

Browser UI to explore and call gRPC APIs — An interactive web UI for gRPC, along the lines of postman

↔ alternative to Postman

Pluggable linter for Terraform infrastructure code — A Pluggable Terraform Linter

↔ alternative to Postman

Cloud-native Kubernetes API and AI gateway — The Cloud-Native API Gateway and AI Gateway

↔ alternative to Postman、Zapier

A cross-platform API development and testing tool. — Postcat 是一个可扩展的 API 工具平台。集合基础的 API 管理和测试功能，并且可以通过插件简化你的 API 开发工作，让你可以更快更好地创建 API。An extensible API tool.

↔ alternative to Postman

Creates mock servers and validation proxies from OpenAPI specs. — Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

↔ alternative to Postman

Cross-platform API testing client for humans. — 🚀 HTTPie Desktop — cross-platform API testing client for humans. Painlessly test REST, GraphQL, and HTTP APIs.

↔ alternative to Postman

A Postman-like API client in your terminal. — A simple API client (postman like) in your terminal

↔ alternative to Postman

Test APIs from OpenAPI schemas with generated cases. — Catch API bugs before your users do

↔ alternative to Postman

Generates API docs, SDKs and MCP servers. — Cortex - Generates interactive API documentation, typed SDKs, and MCP servers from OpenAPI, AsyncAPI, GraphQL, gRPC, OpenRPC, and Markdown.

↔ alternative to Postman

AI-powered cross-platform API client — 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.

↔ alternative to Postman、Bruno

API management, testing and mock data platform. — 做最好的接口管理平台

↔ alternative to Postman

An offline-first HTTP and socket testing client. — Offline-First Minimalistic HTTP & Socket Testing Client for the Web & Desktop

↔ alternative to Postman

Tiny shell wrapper for curl REST calls — Little command line REST client that you can use in pipelines (bash or zsh).

↔ alternative to Postman

Open-source API development tool — Developer-first OpenSource API DevTool, Postman/Insomnia alternative.

↔ alternative to Postman

Human-friendly cURL-like CLI for HTTP. — Go implement CLI, cURL-like tool for humans

↔ alternative to Postman

Next-gen API testing and development tool — Your next-gen API testing and development tool.

↔ alternative to Postman、Apidog

Douyu-style live streaming Flutter client — DY :rocket: Flutter 礼物特效、手势动画、弹幕池、抽奖、鱼吧

↔ alternative to Notion、Figma、Postman

Terminal API client for HTTP, GraphQL and gRPC. — Terminal API client for HTTP, GraphQL, gRPC, WebSocket and SSE. Plain .http files you can diff and version, with scripted tests, workflows, mocks, recorder, and a CLI runner for CI.

↔ alternative to Postman

Self-hosted collaborative API development environment. — Yaade is an open-source, self-hosted, collaborative API development environment.

↔ alternative to Postman

Burp Suite extension for sending many HTTP requests. — Turbo Intruder is a Burp Suite extension for sending large numbers of HTTP requests and analyzing the results.

↔ alternative to Postman

Console application for interacting with web servers. — htty is the HTTP TTY, a console application for interacting with web servers.

↔ alternative to Postman

Cross-platform functional testing tool for APIs — SoapUI is a free and open source cross-platform functional testing solution for APIs and web services.

↔ alternative to Postman

GUI and CLI tool for testing REST APIs — Tool to test HTTP/RESTful webservices.

↔ alternative to Postman

Visual editor for OpenAPI and Swagger definitions — GUI / visual editor for creating and editing OpenAPI / Swagger definitions

↔ alternative to Stoplight、Postman

Desktop API debugging client — Advanced REST Client - Desktop application

↔ alternative to Postman

CLI for interacting with REST APIs — Restish is a CLI for interacting with REST-ish HTTP APIs with some nice features built-in

↔ alternative to Postman

Interactive HTTP REPL from the command line. — simple, intuitive HTTP REPL — Speak HTTP like a local.

↔ alternative to Postman

Extensible request/response workbench — An Extensible Request/Response Workbench

↔ alternative to Postman

Test and share APIs with TypeScript-powered requests. — Discover, test, and share APIs in seconds

↔ alternative to Postman、Insomnia

Lightweight local Postman alternative for API testing — Privacy-first API platform built with Tauri v2. No login, no cloud, ~60 MB RAM. A lightweight Postman alternative.

↔ alternative to Postman

A terminal-based HTTP/REST client. — Terminal-based HTTP/REST client

↔ alternative to Postman

HTTP request and mock server tool. — HTTP Request & Response Service, Mock HTTP

↔ alternative to Postman

API management and mocking platform. — Api Mocker is more of an api management system than a mocker.

↔ alternative to Postman

Web editor for creating and sharing RAML API specs. — A web editor for creating and sharing RAML API specifications

↔ alternative to Postman

Lightweight graphical HTTP client for testing APIs. — The free, lightweight and multiplatform graphical HTTP client that respects your privacy.

↔ alternative to Postman

GraphQL IDE for API exploration — ⚡️ GraphQL IDE - An extensive IDE for exploring GraphQL API's

↔ alternative to Postman

REST client — A beautiful, cross-platform REST client.

↔ alternative to Postman、Insomnia、Paw