Scheme (dialect of Lisp) interpreter written in Java.
XION is an xTalk language similar to the ones used by HyperCard, SuperCard, and Runtime Revolution. OpenXION (OH-pen-EK-shun) is the reference implementation of the XION scripting language, an open standard. The authors claim: “XION (EK-shun) is a kind of scripting language that enables ordinary people to do extraordinary things. You do not need to learn a bunch of cryptic symbols and how to put them in exactly the right places in order to tell your computer what to do. Since XION has been created to resemble natural English, all you need is a basic understanding of the English language.”
jContractor is a 100% pure Java implementation of Design By Contract for the Java language. Contracts are written as methods that follow a simple naming convention. jContractor provides runtime contract checking by instrumenting the bytecode of classes that define contracts. jContractor can either add contract checking code to class files to be executed later, or it can instrument classes at runtime as they are loaded. All contracts are written in standard Java.
Mirah (nee Duby) is a new experimental language born out of the JRuby project. In order to make implementing Ruby on the JVM easier and more approachable for Java and Ruby developers alike.
Mirah’s design is centered around a few simple principals: Platform-agnostic, Free from concrete decisions about the back-end type system, code generation, or other details are specified by the outward language. This means roughly similar scripts could conceivably compile to any number of type systems and runtimes. In this sense, Mirah is more of a rough coupling of Ruby-like syntax with a pluggable type-inference and compilation pipeline.
The JavaFX Script programming language lets you create modern looking applications with sophisticated graphical user interfaces. It was designed from the ground up to make GUI programming easy; its declarative syntax, data binding model, animation support, and built-in visual effects let you accomplish more work with less code, resulting in shorter development cycles and increased productivity.
Faun project is yet another PHP interpreter in Java. It allows interpretation of PHP code within JVM in Java applications. Parsing is based on ANTLR grammar.
The end goal of this (still quite experimental) project is to be able to use existing code written in the R language within the Google AppEngine Java runtime. In the first phase, the immediate goal is to make available the existing R interpreter, written in C, C++ and Fortran, to the Java VM through nestedvm.
Tuga is a small, opinionated, statically-typed scripting language that is oriented around OOP and getting things done. It has some aspects of Ruby, Python, Java, and ECMAScript but aims to be better than all these at building large-scale systems while still being good for quick scripts.
Greebo is a multi-paradigm programming language that borrows on concepts from Lisp, Dylan, Lua or IO. Some features are tail recursion optimization, both lexical and dynamic closures, zero special forms (‘def’ or ‘if’ can be used like any other procedure), first-class environments whose bindings and properties may be manipulated at wish, powerful macros, literal indexers and slices for anything that is a collection and more.