
Description: JSON Online Viewer is a free web-based tool to view, edit, format, analyze, and validate JSON data. It allows you to paste or upload JSON documents and provides a tree view to easily navigate large JSON files.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: JSONLint is a lightweight web tool and API for validating JSON data. It checks for syntax errors and validates against schemas. Useful for checking JSON configs, API payloads, and debugging issues with JSON serialization.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API