I found this, and hope it helps:

http://www.passur.com/data_products.htm

PASSUR web products are also available as direct data feeds to support:*:
Flight Information Display Systems (FIDS), Gate Information Display (GIDS)
Baggage Information Display Systems(BIDS)
Noise Operations Monitoring Systems (NOMS)
Airline internal flight management systems (Flyfo)
Gate management software
Airport Operational Databases (AODB)
Airport financial software
Airport planning software

So, it would appear that Flyfo might be some type of computer system.