https://github.com/substance/substance

JavaScript
A JavaScript library for web-based content editing.

Substance

Substance is a JavaScript library for web-based content editing. It provides building blocks for realizing custom text editors and web-based publishing systems.

Read the introduction post, check the project website, the examples and the API documentation.

Substance Beta 4 introduces support for realtime collaboration. While still under development, you can already check out and run our full-stack collaborative Notepad application.

Features

Features	State
Custom document schemas	✓
Custom converters (XML, HTML, etc.)	✓
Custom HTML Rendering	✓
Annotations that can span over multiple nodes	✓
Annotations can hold information (e.g. a comment)	✓
Incremental document updates (undoable operations)	✓
Transformations for document manipulation	✓
Custom editing toolbars	✓
Commands for controlling the editor	✓
I18N support	✓
Realtime collaboration	Beta 4
Persistence API for documents	Beta 4
Key bindings	Beta 5
Full Unicode support	Beta 5
Plugins	Beta 5
UI Components
TextPropertyEditor for editing annotated text	✓
ContainerEditor for in-flow-editing	✓
Scrollable ContentPanel with Support for highlights	✓
Customizable Toolbar	✓
ScrollPane with interactive visual Scrollbar	✓
Interactive TOCPanel	✓
Predefined content types
Paragraph	✓
Heading	✓
Blockquote	✓
Codeblock	✓
Image	✓
Embed (image, video, tweet etc.)	✓
List	Beta 4
Table	Beta 4
Predefined annotation types
Strong	✓
Emphasis	✓
Link	✓
Subscript	✓
Superscript	✓
Code	✓
Comment	Beta 4
Platform support
Mozilla Firefox (>=42)	✓
Apple Safari (>=9)	✓
Google Chrome (>=47)	✓
Microsoft Edge	✓
Mobile Safari (iOS)	Beta 5
Mobile Chrome (Android)	Beta 5

Development

Install the dev dependencies.

npm install

Run the dev server.

npm start

Navigate to http://localhost:4201/docs for the docs and http://localhost:4201/test for the test suite.

To run the test-suite headless

$ npm test

To bundle the docs into a distribution:

$ npm run doc

Roadmap

Beta 4

ETA: March 2016

• Realtime collaboration
• Persistence API for documents
• Table node
• Editing of lists
• Improved stability, documentation and tests
• Full-stack platform example

Beta 5

• Key bindings
• Plugins
• Improved Unicode support
• Mobile support
• Automatically generated performance report
• Modules for server-side integration

1.0 Final

• Complete documentation
• Full test coverage
• Final versions of API's