I tried Pepper back then and found the same issues you had. In the end, I usually end up with BBEdit. It's fast, the developers are responsive and keep it up to date and it handles the languages I'm interested in fairly well (but they could be better). I keep Atom up to date and I've been looking at VS Code, but both are kind of slow. I have a TextMate license, but I stopped using it after the continued delays on 2.0. The 2.0 betas are actually decent, but I tend to stick with BBEdit. I tried Sublime Text, but got very put off by the need to configure preferences with a text file.

No, Eddie is software that actually is written by a former Be developer. I think he originally wrote it for BeOS and has since ported it to OS X and he has an older Linux port as well. It has nothing to do with Pepper.