Desktop/Android/HTML5/iOS Java game development framework

CoreNLP: A Java suite of core NLP tools for tokenization, sentence segmentation, NER, parsing, coreference, sentiment analysis, etc.

OpenPDF is a free Java library for creating and editing PDF files, with a LGPL and MPL open source license. OpenPDF is based on a fork of iText. We welcome contributions from other developers. Plea…

A 2D chart library for Java applications (JavaFX, Swing or server-side).

Eclipse IDE for the Go programming language:

Code you need to get Echoprint working on Android

Prolog Development Tool for Eclipse (PDT) -- http://sewiki.iai.uni-bonn.de/research/pdt/

Implementation of "Warren's Abstract Machine: A Tutorial Reconstruction" by Hassan Aït-Kaci.

LoJiX is a framework for logic compilers, and a Prolog implementation.