This is basically a replacement for the TRichEdit built from the ground up with lot of bells and whistles. I chose this to replace DevExpress's layout control when I encountered a problem that was going to have to wait until the next release for them to fix.

There is a bit of a learning curve getting used to using this, but it is worth it. For example, the support is top notch. I had trouble getting started, proposed writing a simple demo to illustrate what I needed to know and the developer custom wrote it within a day.