Individual icons from a Fontographer font database (*.fog) can be exported as TrueType Fonts either with the Fontographer itself, or other dedicated font editors and conversion programs like the FogLamp.
Convert Fontographer font database file to TrueType font file.
We found 3 software records in the database related to .fog to .ttf file format conversion.
Apple macOS / Mac OS X software - convert fog to ttf on OS X
A fontographer source files converter
Convert from fog file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned fog to ttf. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
A font editor program
Multiplatform software - convert fog to ttf on any platform
Utility used to generate various types of fonts.