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.

Mailinator allows Developers and QA Testing teams to automatically test their SMS and Email workflows like 2FA verifications, sign-ups, and password resets with trillions of inboxes at your fingertips.

Get unlimited email addresses and mailboxes for automating end-to-end tests with our simple APIs

Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.

YOPmail’s free, quick and feature rich service guards you against spam. Protect your actual email with an anonymous email address, instead use YOPmail’s disposable one to sign-up wherever you want.

JustJSON is a free, simple tool that lets developers quickly create, store, and manage JSON collections. Add, retrieve, and delete data with ease—perfect for testing, JSON placeholder, or mocking data for your apps.