There are 2 repositories under moka7 topic.
Mokka7 is native port of Snap7 core in pure Java (fork of moka7 http://snap7.sourceforge.net) and parts of Sharp7.
S7 PLC communication library for Java, based on Moka7
Open SCADA library based on Moka7 (http://snap7.sourceforge.net).
Spring Boot Server to access Siemens LOGO® and map it to a REST Interface. Utilizes moka7 for communication with plc