On AmigaOS 4.1, there is an emulation layer for the X-Server that allows those 3 programs to work called AmiCygnix. It allows some interoperability with Linux code. iWorks was what I think new code for Haiku could represent. A system-conforming example code that other applications would be judged against.
Thanks for putting up with my rants. I’ve started a new thread about how a style-guide should affect the Haiku ecosystem: What makes Haiku software special so maybe I can diffuse the whole idea of natively written code over there.