JustJson

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.

Similar Tools

Monitor network requests and API failures with real-time insights
It’s a disposable email platform made for QA and test automation. You get private, isolated inboxes that behave like real ones — but are built for fast, repeatable, testable flows.
Free & OpenSource REST API Testing Tool for all levels in a Test Pyramid
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.
Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.
JSONLint is a validator and reformatter for JSON, a lightweight data-interchange format.
Subscribe to our newsletter
We'll keep you up to date on all the testing trends.