An unfinished game by Tomas Bok. Bok worked for Infocom briefly before college (see this forum thread). Hypochondriac was a "fun project" he was working on in his own time.
The source package is Bok's work directory, and contains several fragments of source code unrelated to Hypochondriac. Some of them (boot.zil, circuit.zil, maintenance.zil) are from an incomplete sci-fi game titled "Search 'n Rescue". Others are source files from Infocom games (Zork, LGOP, etc), modified while Bok was experimenting with ZIL.
Infocom's trademark was abandoned in 2002, but the IP is stilled owned by Activision. This site exists for the preservation of abandonware.