I have such fond memories of these systems. I was lucky enough to go to a magnet high school in the late 90s and we had a lab full of these. Getting such early exposure to not only UNIX (well, AIX) but also the RISC architecture definitely had an impact on my computing career.
I use DaVinci Resolve 17 for primary video editing, plus Fusion for basic composition. Blender was done for most of the animation work (the semaphores being fusion compositions instead cause I was lazy). Audio is recorded in Resolve, but post-processed through RX Elements 8, and music is from the YouTube library.
Aix was one of the target platforms for our development software back in the 2000's.
One of the most interesting differences from the other UNIXes we were using (HP-UX, Solaris), was the XCOFF format meaning a development experience to create shared objects similar to Windows dynamic libraries, including the famous import libraries and symbol definition files.
i series is identical at the CMOS level to p series, and was already around 1990 when those were called OS/400 and RS/6000, resp. Dunno about System/360 times. Ofc DB/2 and RPG aren't exactly made for general-purpose computing ;) but there's something called ILE for C/C++ programming on i series (and z series) I believe.
