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APIs

Tools for designing, testing, documenting, and managing APIs.

30 tools
AgentQ
paid

AI platform that generates and runs API, web, and mobile tests from plain language

API Dash
open-source

Open-source AI-powered API client with Dashbot assistant for debugging and code generation.

Apidog
freemium

All-in-one API platform combining design, testing, mocking, and docs with AI assistance.

Beeceptor
freemium

Mock API server that generates realistic responses from specs or prompts using AI

BlinqIO
freemium

Autonomous AI test engineer that generates and maintains Playwright tests from plain English

EvoMaster
open-source

Open-source AI-driven fuzzer for REST, GraphQL, and RPC APIs using evolutionary algorithms.

Hoppscotch
open-source

Open-source API development platform for designing, testing, and mocking APIs

Insomnia
freemium

Open-source API client with AI test generation and MCP client support from Kong.

Katalon
freemium

Test automation platform with StudioAssist AI for code generation and OpenAPI-driven tests.

Keploy
freemium

Open-source AI testing agent that records real traffic and turns it into API and integration tests.

KushoAI
freemium

AI agent that generates functional and security test suites from API specs.

Mabl
paid

Agentic test automation platform covering API, web, mobile, and accessibility testing.

Mockfly
freemium

Mock API generator that builds endpoints and JSON responses from natural language with AI

MockingCloud
freemium

Generate mock REST APIs and datasets from plain English using GPT

Mockoon
open-source

Open-source tool to create and run mock REST APIs locally in seconds

MockServer.in
freemium

Cloud mock API endpoint generator with AI-generated JSON responses

Momentic
paid

AI-powered low-code testing platform with natural language E2E and API tests.

Parasoft SOAtest
paid

Enterprise API testing platform with agentic AI assistant and natural language assertions.

Perfecto
paid

Agentic AI continuous testing platform for web, mobile, and API test automation

Postman
freemium

API platform with Postbot AI for natural-language test generation and debugging.

QA.tech
paid

AI QA agents that create and run end-to-end and API tests across your app

qAPI
freemium

Codeless AI-driven API testing platform with a bot that generates test cases from specs.

Qyrus
freemium

AI-driven codeless test automation platform for web, mobile, and API testing

ReadMe
freemium

Interactive API documentation platform with AI-powered developer hub creation

ReadyAPI
paid

SmartBear API testing suite with AI test generation from natural language prompts.

SingleAPI
freemium

Turn any website into a structured JSON API using AI-based extraction

StackHawk
paid

AI-driven DAST and API security scanning built into the developer CI/CD workflow

Tusk
paid

AI agent that generates and maintains unit and integration tests in CI

Tusk Drift
freemium

Generates API tests by recording and replaying live production traffic.

Workik Swagger/OpenAPI Generator
freemium

AI-assisted generator for Swagger/OpenAPI specs and API code