JSON Editor Online is a web-based tool to view, edit, and format JSON. It shows your data side by side in a clear, editable treeview and in a code editor.
Cost / License
- Free
- Proprietary
Platforms
- Online

Grayslate is described as 'Free, open-source desktop scratchpad for developers. It recognizes pasted code and data, suggests useful transformations, automatically chooses filenames and extensions, and saves new slates locally as you type' and is a Note-taking tool in the development category. There are more than 25 alternatives to Grayslate for a variety of platforms, including Web-based, Mac, Windows, Linux and Android apps. The best Grayslate alternative is Notepad++, which is both free and Open Source. Other great apps like Grayslate are Markor, HelixNotes, ghostwriter and FocusWriter.
JSON Editor Online is a web-based tool to view, edit, and format JSON. It shows your data side by side in a clear, editable treeview and in a code editor.

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