I programmed these back in 1991 when a few of us thought it would be a good idea to run a BBS.
TDBS is/was the database language used to program for
TBBS.
OLC was designed to simplify TBBS configuration.
FBH & FBE were designed to emulate the functionality of PCBoard's file base.
OLC - Online Configuration for TBBS
FBE - File Base Enhancer for TBBS
FBH - File Base Handler for TBBS
Sadly, these were NEVER released to the general public.
Download - Complete source code for FBH, FBE, OLC & Keymaker