A Java implementation of XProc: An XML Pipeline Language
This project is now abandoned in favour of MorganaXProc-III which implements XProc 3.0: https://sourceforge.net/projects/morganaxproc-iiise/
MorganaXProc is a full implementation of XProc: An XML Pipeline Language (W3C Recommendation 11 May 2010) written in Java, supporting all required and optional steps, the steps proposed on EXProc.org and also the document templating steps "p:in-scope-names" and "p:template".
XPath 2.0 or XPath 3.0 is used as expression language.
XSLT and XQuery are supported out of the box, while a flexible connector mechanism also allows to employ your favorite XSLT and XQuery processors.
The current version is 1.0.x. It is very close to the recommendation with all related tests of the XProc Test Suite passed.
Bee script is a scripting language for the Java platform. It is based on the BeanShell scripting language but it provides better tools for functional programming.
ActivityScript takes an activity diagram (created with a UML tool) and executes it's contents. The content of Activity boxes are executed, the Guards of a Decision box are evaluated to control program flow and Fork boxes initiate new threads.
Viva is an open-source Java runtime that includes support for languages beyond Java such as Python and interops with umanaged languages running outside the Java runtime such as C/C++/Perl/Python and more out-of-the-box.