Feature comparison of open-source wysiwyg editors with CNI's interests

compare-editors.md

/	ProseMirror	Quill	CKEditor5	Textbox.io	Slatejs
Content Format	Abstract Content Tree	JSON	VDOM Tree	HTML	Immutable.Record
Editor Design	Blog posts from author	Compare with other editors	Design Wiki	N/A	Slate Principles
Document Scheme	Extensible Schema	N/A	Extensible Scheme	N/A	Schema with custom validation
Collaborative-editing	Built-in Support	N/A	Support via CKE Cloud Services	N/A	N/A
Suggestion-mode	Primitive Support but extensible	N/A	Support complete Comment/Reply	N/A	N/A
Spell-check	Browser Native	Browser Native	Browser Native or SCAYT	Sever-side Spell-check	Browser Native
l10n Support	No	No	Support 20 languages	N/A	N/A
Markdown Output	Standard Markdown	No Built-in Support	GitHub Flavored Markdown	N/A	No Built-in Support but extensible
Configure-able Editor	Plugins System	Modules System	Plugins System	Configuration Object	Plugins System
Editor Theme	N/A	Support Theme but requires CSS overrides to change look&feel	Support Theme	N/A	N/A
Editor UI Layout	Classic	Balloon & Classic	Balloon & Inline & Classic	Classic	Balloon & Classic
Format As-you-type	Supported via input-rules	N/A	Supported	N/A	Supported via Markdown shortcuts
Avoid Editing-raw	No source mode by default, but editing raw markdown is supported	No source mode	No source mode	No source mode	No source mode
Mobile Support	Editing works on mobile, UI is not mobile friendly	Editing works on mobile, UI has some mobile usability feature but it's difficult to use	Editing is clunky on mobile, UI is not mobile friendly, but mobile support is planned	Editing works on mobile, editor comes with mobile-first UI, write with Siri Support	Editing works on mobile with some flaws, UI is not mobile friendly
Paste From Word	Not Supported	Not Supported	Supported in version 4 but missing from the new version	Well Supported	N/A
Content Formatting Options (Built-in)	B,I,U,LINK,H1-6,CODE,B_QUOTE,PRE,UL,OL,HR	B,I,U,LINK,H1-2,FONT,CODE,UL,OL,ALIGNMENT	B,I,LINK,H1-3,B_QUOTE,UL,OL	B,I,U,LINK,H1-4,PRE,B_QUOTE,LEAD,LINK,ALIGNMENT,INDENT/UN_INDENT,FONT,TABLE,HR	B,I,U,LINK,H1-2,CODE,B_QUOTE,UL,OL
Media Embedding	IMAGE (url)	IMAGE (local), VIDEO (embed url)	IMAGE (with layout options)	IMAGE, VIDEO or any MEDIA (Embed Code)	No built-in Support but extensible
IME Support (Tested with Chinese IME)	Supported	Supported	Supported	Supported	Supported
Development Status	May, 2015 – Now, Low	Jul, 2012 – Now, Low	Jun, 2014 - Now, Medium	Unknown	Jun, 2016 - Now, Low
Documentation	Guide explains how-it-works & architecture and Reference explains granular editor APIs, documentation has provided concrete code samples.	Guide explains editor designs and Docs has everything from configuration to APIs.	Docs includes everything from how to install/build, custom editor configuration, and JSDoc has provided details of each editor API.	Developer Guide covers the basic while API Docs is too brief, hard to find any code samples	Docs covers everything from configuration to customization
License	MIT license	BSD 3-clause	GPL, LGPL and MPL licenses, at your choice	Commercial	MIT License
Written In	ES2015	ES2015/ES5	ES2015	Unknown	ES2015
Source Structure	Multi-repo (23 repos)	Single-repo	Multi-repo	Unknown	Single-repo, Multi-packages