Avian is a lightweight virtual machine and class
library, both written from scratch to provide a
useful subset of Java's features. It's well-suited
to cross-platform applications which need a
typesafe language but must remain small and
self-contained.
Retro is a clean, minimalist language with roots in Forth. It supports all major OSes in use today, and was designed to be easy to learn, use, and modify for specific needs.