The Best WireMock Alternatives in 2026

A JavaScript API mocking library that shares request handlers between browser development and automated tests.

An HTTP mocking and proxy server with request expectations, response configuration and verification APIs.

An open-source HTTP mock server and validation proxy based on API specifications such as OpenAPI.

Compose and send HTTP requests with this REST testing interface, which includes method, endpoint, and request options.

Bruno is an API client that stores collections as local files for use with Git and other version-control workflows. The open-source edition handles personal request testing and collection runs; paid editions add integrations and in-app conveniences.

Beeceptor creates REST and SOAP mock APIs with responses generated from prompts or traffic.

Test and prototype with JSONPlaceholder, a free fake REST API offering six resources and standard HTTP methods.

HTTPie provides API testing clients for the terminal and desktop, with documentation and request workflows.

Postman is an API development platform for sending requests, inspecting responses and maintaining collections and environments. Its Free plan covers individual API work, while shared team workflows and some automation features use paid plans.

Create Telegram bots using the Telegram Bot API HTTP server in this repository.

Send HTTP requests from the terminal with Posting, an interactive client that can also run over SSH.

Hoppscotch is an open-source API client with web, desktop and command-line options. Its personal workspace supports request collections, environments and tests. Hosted team collaboration has separate paid plans.