Free for commercial use WYSIWYG(M) online editor?

Question

Copyright

There is only one problem: we need a free editor (let it be a stripped-down version) that can be used in commercial resources (for example, offer users of a subscription-based site a free load for editing texts).
The goal is to launch a prototype project with a minimum investment, without violating the terms of the licenses. Release everything in open source and do not offer other extreme options. Thank you!

Answer 1

The same TinyMCE is distributed under the terms of the LGPL and allows linking with proprietary products if they are not derivatives of itself, just do not touch the license text in the code.

Answer 2

elrte.org
BSD License

Answer 3

premiumsoftware.net/cleditor/ - MIT