TurboPower Software's Object Professional, an object-oriented library for Turbo Pascal.
These files were made open-source along with all of TurboPower's content, but this specific library was somehow missed when all of the code was uploaded to the SourceForge repository. That repo is now abandoned.
May 25, 2022 Subject:
File does not have a virus
Responding to SiliconPengiun's comment about viruses: ClamAV flags any archive with LZH decompression code in it as a virus. This archive was created when LZH was used for distributing files in archives, and does not have any viruses.
May 24, 2022 Subject:
This file has a virus
Object Professional 1.14.zip: Win.Trojan.LZHDropper-9950323-0 FOUND