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.

go graphql kubernetes cli terminal rest rest-api websocket mock-server grpc http-client openapi api-client tui sse api-testing ssh-tunnel rest-client api-testing-tool api-testing-tools

• Updated Nov 10, 2026
• Go

AI 驱动的可视化 API 测试编排平台 | 自然语言秒变测试流程 | 可视化拖拽编排 | 零代码测试自动化 | 智能 API 采集 + AI 生成测试用例/AI-Powered Visual API Test Orchestration - Transform natural language into test flows | Drag & drop | Zero-code | Smart capture

ai test-automation api-testing test-generation testing-framework api-automation py-test playwright test-orchestration ai-powered api-testing-tool aitest visual-workflow ai-test-generation flow-based-testing aipytest

• Updated Jun 22, 2026
• TypeScript

Swagger/OpenAPI/WSDL/SOAP 接口 Fuzz 工具， —— 面向 API 安全测试的轻量化命令行工具。

exploit wsdl swagger openapi web-services fuzzing api-testing security-testing api-security scanner-web api-testing-tool

• Updated Oct 10, 2025
• Python

TUI API testing tool.

go tui bubbletea api-testing-tool

• Updated Oct 18, 2025
• Go

Layang is a gRPC-first, workspace-based API workbench for testing, mocking, benchmarking, documenting, and automating API workflows across gRPC, gRPC-Web, WebSocket, and REST.

api benchmark protobuf rest-api mock-server websockets grpc api-documentation workspace api-testing grpc-testing grpc-streaming grpc-mock-server api-testing-tool workspace-folder

• Updated Oct 5, 2026
• TypeScript

A developer and git friendly offline-only API client designed for efficient API testing and development. It stores the collections and requests as YAML files on your local file system, making it convenient to organize, reuse, and share your APIs. (Alternative to Postman and Insomnia)

javascript git testing api graphql http automation websocket mock-server grpc api-client api-flow mock-apis postman-alternative api-testing-tool api-collection-runner ui-base-test-creation

• Updated Sep 6, 2026
• JavaScript

terminal based api stress testing with random data + templates

golang http-requests net-http tabby api-testing-tool

• Updated May 12, 2026
• TypeScript

API Testing & Pentesting Inside Chrome DevTools.

security web-crawler api-testing burpsuite security-tools pentest-tool security-testing security-research api-crawler pentest-tools pentesting-tools pentesting-tool api-testing-tool api-security-testing burpsuite-alternatives webslurp web-slurp api-slurp api-endpoints-mapping api-editor

• Updated Aug 4, 2026
• JavaScript

Retreever is a lightweight, developer-first toolkit that automatically discovers your Spring Boot APIs and generates a clean, test-ready documentation model — zero configuration required.

documentation-generator api-testing-tool

• Updated Aug 16, 2026
• Java

The Zero-Config API Integration Testing Suite for Node.js

nodejs testing typescript faker supertest api-testing api-testing-framework msw vitest api-testing-tool usagi-test

• Updated Mar 29, 2026
• TypeScript

IntelliJ HTTP Client Demo

integration-testing developer-tools api-testing api-testing-tool ijhttp http-client-cli

• Updated Oct 6, 2024
• Java

Maven plugin and Spring Boot Test autoconfiguration for IntelliJ HTTP Client

integration-testing http-client maven-plugin developer-tools api-testing api-testing-tool ijhttp http-client-cli

• Updated Feb 2, 2024
• Java

A simple command line tool to test api http request

api cli api-testing-tool

• Updated Jun 8, 2026
• Rust

Highly adoptable api test Framework for large and complex projects, that need a dependency-conscious, secure and fast testing solution.

testing api-testing api-testing-framework api-testing-tool

• Updated Jul 2, 2026
• Go

Workflow-aware API testing tool that models your API as a graph of resources, actors, and dependencies — and auto-resolves the full request chain.Postman is an HTTP client; Reqloom is an API workflow engine.

testing rest-api http-client api-client developer-tools testing-tools http-clients postman-alternative api-testing-tool http-client-cli api-workflows developer-tools-productivity

• Updated Oct 31, 2026
• C++

INSPECTO — a Postman-style API testing toolkit with a Flutter frontend and Node/Express backend. Features a request builder, pretty-printed response viewer, MongoDB-backed collections & environments, and a pure-black neon "cyber" UI.

dart mongodb rest-api postman flutter mongodb-database api-testing rest-client mongodb-atlas api-testing-framework flutter-app postman-alternative api-testing-tool

• Updated Apr 16, 2026
• Dart

Browser-based Burp-like toolbox for manual HTTP request crafting, local history, replay, and diff. Static UI deployed via GitLab Pages.

http static-site web-security pentesting replay gitlab-pages request-builder api-testing-tool burp-like

• Updated Dec 29, 2025
• JavaScript

Pingstream is a lightweight, Streamlit-based API testing tool using curl under the hood. Designed for low-RAM systems, it supports GET, POST, PUT, DELETE with JSON, headers, file uploads, and Postman/OpenAPI import.

python lightweight productivity json curl rest-api openapi python3 developer-tools linux-tools low-memory streamlit postman-alternative api-testing-tool

• Updated Nov 4, 2025
• Python

a YAML-based HTTP API test runner built for readable, composable test suites.

testing test test-automation testing-tools api-testing api-tools api-testing-framework api-testing-tool api-test-automation

• Updated Oct 26, 2026
• Rust

Postman-like API client for any Swagger UI page. Tabs, environments, saved JWT tokens and cookies, command palette, code snippets and dark mode. Works with FastAPI, NestJS, Spring Boot, ASP.NET Core and Express. No import, no setup.

express spring-boot rest-api swagger http-client openapi api-client postman jwt-tokens swagger-ui asp-net-core jwt-auth chrome-extensions rest-client openapi3 nestjs fastapi postman-alternative api-testing-tool developer-tools-productivity

• Updated Nov 10, 2026
• TypeScript