HERMES Eos
An eMail client in C for the Mac, based on QUALCOMM Eudora.
...Medium-to-long term, it is anticipated that the graphical user interface will be rewritten to leverage Cocoa rather than Carbon, enabling compatibility with post-Mojave Intel machines, and all Apple Silicon (ARM64) machines.
The code distributed here was originally intended to be compiled with Metrowerks CodeWarrior in order to produce a CFM app on PowerPC. It was brute-force converted with an old version of Apple Xcode to be openable with Xcode in general, but the project as-is won't compile, never mind run. FOR DEVELOPERS ONLY!