The purpose of these is to allow the exchange of Full Thrust game data in a standard way. By using a standard format, various programs and utilities can operate on the same data files. Not in active use here for historical record. The xml based FTJava format is probably the best one to pick.
The Ground Zero Format (GZF), is designed for the general exchange of any Ground Zero Game in ASCII form. Its based on the format used in email and web pages (RFC822).
This is a profile written using GZF for Full Thrust Second Edition.
This is a profile written using GZF for Fleet Book Volume 1.
FT Java uses a more modern xml schema.