Apps similar to CodeJar include CodeMirror, which is free and open source. Other options are ACE Code Editor, Expr Code Editor and Monaco Editor. In total there are four Code Editors like CodeJar for self-hosting and the web.
Versatile text editor implemented in JavaScript for the browser. It is specialized for editing code, and comes with a number of language modes and addons that implement more advanced editing functionality.
Embeddable JavaScript code editor with syntax highlighting for over 110 languages, customizable key bindings, multi-cursor support, theming, live syntax checking, large file handling, regex search, plugin extensibility, compatibility with modern browsers, and open-source licensing.
Netherlands
EU
An embeddable code editor written in JavaScript which allows editing expressions with syntax highlighting and autocomplete based on your types declaration.
Russia
The Monaco Editor is the code editor that powers VS Code. A good page describing the code editor's features is here. It is licensed under the MIT License and supports Edge, Chrome, Firefox, Safari and Opera.
United States
