An earlier version of Coco Delphi had a IDE but I only use the command line version of the tool. Here are the sources, they probably have a couple of windows-dependencies though:

http://www.tetzel.com/Coco-R/CocoRDelphiSource.zip

Running CocoDelphi.exe on a command-line using Wine should work great. But if you already made a lot of progress using Pascal Coco then it will probably be quite a bit of work to switch now.