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
Simulate APIs, integrations, and environments at enterprise scale.
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.
Optimizely is a platform for running experiments and feature flagging, helping teams test, measure, and optimise digital experiences before full release.
Requestly is an open-source tool that simplifies API development, testing, mocking, and integration for developers and QAs.
Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place
Subscribe to our newsletter
We'll keep you up to date on all the testing trends.