GDBI is a genealogy program integrator. It includes an editor and the lifelines report language. It interfaces to multiple GEDCOM databases and is most popular as a PhpGedView client. At the core is a Java API to simplify adding databases and editors.
Bitnets instantiates and operates on graphs and subgraphs of large complex networks, such as kinship networks. Bitnets consists mainly of a java library, a number of use examples and an interactive interpreted language interface.
jLifeLines is a genealogy program, based on the popular LifeLines project, to help with your family history research. Its primary strengths are its powerful scripting language and the ability to easily import and export information in the GEDCOM format.