gedcom4j is a Java library for loading (parsing) and saving GEDCOM 5.5 or 5.5.1 files to/from a Java object hierarchy, which can be manipulated by your code as you see fit. Please note that gedcom4j is not an application. It is a library for parsing, manipulating, and writing GEDCOM data in your own programs.
CRest (Client REST) is a lightweight library that simplifies the integration of third party RESTful services into Java applications. CRest is mainly annotation-driven, allowing the developer to focus on the essential aspects of the integration of a REST service, such as the definition of the Java interface that maps the remote REST methods and the data model the interface will deal with. The rest is achieved by annotating a plain Java interface with the relevant information such as the service end-point, the desired timeouts, URL formats, etc. CRest will handle everything else, including HTTP request generation, auto marshalling of the response, and more.
SimpleTemplate is a simple template engine written in Java. You can generate formatted text from a Java bean. You can use it for generating XML files, Web sites, etc. It features simple template directives, user-selectable template directive separators, alias creation using with and set directives, support for indexing into arrays, collections, and maps, looping on an array or a collection, a simple include mechanism to reuse template files, conditional evaluation using if and ifelse, and custom list separation settings (prefix, suffix, and separators). Template files can be read from the filesystem, class path, or just a string. Support for methods, aka. sub templates.