system
A chat on subreddit /r/pcmasterrace
human
Here's a term you don't hear much anymore, "Shareware." 

It's closed source and copyrighted software you're encouraged to copy and distribute.  Wolfenstein 3D, Doom and I think Quake were marketed via a shareware release which usually included the first level or two of the game.

You would find them on BBS systems for download, and they were staples of those "300 games in one" CDs you'd buy at the store, alongside the Hugo games and a bunch of other cheap shovelware.
gpt
AutoCAD started out as Shareware as well.