Api module of FIXYou project, as the name would suggest contains APIs shared between all FIXYou modules

Commons module of FIXYou project, contains common code used in multiple FIXYou modules

Parser module of FIXYou project, contains fix message model and parser

Fix commons module of FIXYou project, contains common fix protocol related code used in multiple FIXYou modules

Netty module of FIXYou project, contains Netty handlers and support classes. It brings everything together, adds netty specific stuff and we end up with complete FIXYou engine