This software is based on the work of Zebulun https://github.com/jafer-org/zebulun a low level Java implementation of the NISO Z39.50 protocol, and Java Access For Electronic Resources (Jafer) https://github.com/jafer-org/jafer The JAFER Project (Java Access For Electronic Resources) was a Jisc funded project (2000 - 2003) based at Oxford University to produce an easy to use toolkit for building portals and information sources without having to deal with the technical intricacies of the Z39.50 protocol.