Rich text editor for front-end use

I am creating a site where a user should be able to make html-content the same way as a manager can do it in backend.

It would be nice if the user also can upload pictures the same way as backend.

Is there a way to use the TinyMCE package that is installed for backend?

MODX version: Revolution 2.2.5pl

You can try NewsPublisher (Bob Ray) for your front end editing.
It's working & easy to use.
You can check the documentation on how to setup & use at http://bobsguides.com/newspublisher-tutorial.html