Eclipse OpenJ9: A Java Virtual Machine for OpenJDK that's optimized for small footprint, fast start-up, and high throughput. Builds on Eclipse OMR (https://github.com/eclipse/omr) and combines with the Extensions for OpenJDK for OpenJ9 repo.
XPath/XQuery 3.1 interpreter for Pascal with compatibility modes for XPath 2.0/XQuery 1.0/3.0, custom and JSONiq extensions, pattern matching, XML/HTML/JSON parsers and classes for HTTP/S requests
A three-dimensional esoteric programming language
A Parenscript to Javascript command line compiler and interpreter.