Is TinyMCE free to use?

yes.

Please see this link and this link for more information.

Anyone that wants to use TinyMCE in their commercial application or website are free to do so.

On top of this,the code is licensed under LGPL, so you may fork the code. Just remember to contribute your changes where other people can see it.(fork on github for example)

If you want support or want to contribute to the development, you are welcome to buy support or get addition plugins with the enterprise version. But only if you want.

Related.

EDIT: If you use a tool like Webpack, remember that the TinyMCE files should not be bundled and minified with the rest of your application. It should be a seperate Java Script and resource files. TinyMCE even has it's own CDN to help you with this.

"It should also be possible to exchange that dynamically linked library for an independently compiled build"

I am installing it from this address by typing "npm install tinymce" as of 2021-01-03, according to the information I received from the site, it is open source and free.

https://www.npmjs.com/package/tinymce

TinyMCE is the world’s most popular open source web-based WYSIWYG editor.

Trusted and loved by millions of developers, and integrated into thousands of applications, such as:

Content management systems (CMSs) Learning management systems (LMSs) Customer relationship management (CRM) and marketing automation systems Email marketing systems Content creation in SaaS systems

The confusing "https://www.tiny.cloud/pricing" written on the tinymce page but according to the paragraph COMMUNITY it is free forever.

Free Forever The open source editor you know and love, free forever and ready for commercial use.