Free WYSIWYG editor?

Hi guys,

Currently I’m using this,

The problem is it’s not responsive.
What is a free and responsive editor.

Thank you very much in advanced.

Hi solidcodes,

I’ve used TinyMCE before, and I don’t recall having any problems with it. If you’re looking for something more lightweight, you might find something here:

And it seems that it is no trouble to make it responsive: