Java utility class library. Mentionable classes are the simple but powerful SQLBuilder, the DTO parser and serializer classes (JSON, XML). The library is used in all of my Java projects. The current productive Version is 2.0.
Java API for JSON Binding (JSR 367) project. Here you'll find drafts of the API and specification along with mailing lists for communication with the expert group. Additional background information and formal milestone releases of the specification and API can be found on the JCP JSR 367 page: https://jcp.org/en/jsr/detail?id=367