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
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.
Monitor network requests and API failures with real-time insights
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.
Voiden is a developer-first API client with local storage, Git-integrated, all based on markdown + offline support.
Manage your entire QA lifecycle in one place. Sync Jira, automate scripts, and use AI to accelerate your testing.
Get enterprise service virtualization for complex systems, realistic behavior, and AI-assisted workflows.
How are teams like yours balancing speed, quality, security, and AI in 2026? Download your copy and get real insights.
Let agents spin up stateful API simulations so they can deliver better work, without hitting your live endpoints.
