Yeah, it was good back in the day but this project is finished now.
I got what I wanted out of it, which was (a) a place to write my first 100k lines of terrible code and (b) a great editor on Linux and Mac before the current waves of great editors existed (Sublime, Atom, VSCode etc). The community of people who used and contributed to it beyond that was always surprising and wonderful.
I think if we'd gone with Web technologies instead of Java it might have gone the distance, but all is easier in hindsight.
VS Code is probably the closest thing to Redcar that currently exists and it's what I use and recommend now. Still doesn't support all the same features of Redcar out of the box though... ;)