Grayslate Alternatives
Apps similar to Grayslate include Notepad++, which is free and open source. Other options are HelixNotes, Markor, ghostwriter and FocusWriter. There's no shortage of Note-taking Tools like Grayslate, with more than 25 alternatives for the web, Mac, Windows, Linux and Android.
Alternatives list
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

Text-Utils.com provides tools for formatting source code, converters, tools for handling text, such as remove duplicate characters, empty lines, text sorter and many others.
Cost / License
- Free
- Proprietary
Platforms
- Online

DevKnife is a native macOS app packed with everyday tools for developers. Format and edit JSON, decode JWTs, generate test data, pick colors, scan ports, compare text, and more. All in one clean interface designed to speed up your workflow.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
Cost / License
- Free
- Proprietary
Platforms
- Windows


JSON Editor is a web-based tool to create and view Json. Its modern UI can create,simple and complex json easily. UI Based Json Editor, Online Json Editor.
Cost / License
- Free
- Proprietary
Platforms
- Online
India

AllJSON is a free, fast, browser-based tool for working with JSON. It validates messy JSON, lets you explore it as an interactive tree, and turns clicked fields into BigQuery / Snowflake-style SQL — all without sending data anywhere.
Cost / License
- Free
- Proprietary
Application type
Platforms
- Online
Poland
EU

Online JSON Formatter and JSON Validator will format json data, and helps to validate, convert JSON to XML, JSON to CSV. Save and Share JSON.
Cost / License
- Free
- Proprietary
Platforms
- Online
India



A powerful online JSON formatter, editor and validator with multiple visualization modes including code, tree, table and graph views, making JSON debugging and manipulation effortless.
Cost / License
- Free
- Proprietary
Platforms
- Online


+2
The JSON Formatter was created to help folks with debugging. As JSON data is often output without line breaks to save space, it can be extremely difficult to actually read and make sense of it. This tool hoped to solve the problem by formatting and beautifying the JSON data so...
Cost / License
- Free
- Proprietary
Platforms
- Online
United States

JSON Sage is a free online tool that helps developers visualize, validate, format, and edit JSON data instantly. It features a clean and modern interface with both tree view and code editor view, making it easy to explore and manipulate complex JSON structures.
Cost / License
- Free
- Proprietary
Platforms
- Online
- Software as a Service (SaaS)



Slate is a free, open-source Notepad replacement for Windows and Linux (Raspberry Pi included) that opens files of any size instantly. Nothing is loaded up front: only what's on screen is read and drawn, so logs, database dumps and JSON exports of hundreds of megabytes open...
Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Windows
- Linux
- Raspberry Pi
United States



































