Fype is For Your Program Execution, an attempt to build an open source scripting language from scratch (just for fun) using C99 on FreeBSD. The focus is to use as few dependencies on 3rd party libraries as possible, to use as little code as possible, and to have a very small execution binary. It should be portable to many different operating systems.
JELAN provides facilities for constructing and invoking LL(1) language lexical analyzers and parsers. These are embedded in the sense that a language can be specified and then used for textual analysis within the same Java program. This avoids the need for a separate generation phase to write and compile a lexical analyzer and parser from the language specification.
Michael4 is a Forth-like language implemented for the 64-bit Alpha Linux platform. It was tested on gentoo Alpha. It differs slightly from normal Forths in that you can call words that are not yet defined and they are automatically stubbed if the source code file doesn't exist for them.
Monster script (or just Monster) is an advanced scripting language made specifically for game development. The language features many new and powerful features, while still aiming first and foremost at increasing productivity and actual usability. The language is especially designed to facilitate game modding and user-generated content and scripts. It is highly object oriented, type safe, bytecode-compiled, and is easily embedded into existing game engines.
Thyrd is an experimental, reflective, visual programming language and environment. In Thyrd, both data and code are stored in cells situated in nested two-dimensional grids. All operations the user can perform to edit the structure are implemented as operators in the Thyrd language, thus a Thyrd program can inspect and modify itself or other programs in the same space. Thyrd belongs to the Forth family of languages. It most resembles Joy in that it uses quotation and combinators to implement iteration and recursion.
interp is a powerful programming language, a testing platform, and a development framework. It is targeted for Linux/Unix-based systems, yet remains adaptable to less powerful embedded systems that were never intended to host an interactive programming language, because all you need is a serial port. I2 is a compiler for interp.
X# (pronounced X-sharp) is an XML-oriented programming language designed to quickly create Web applications and services. Everything is represented as an XML tree, and instead of using functions to manipulate information or perform actions, all possible operations are done by adding, removing, or changing nodes from this tree. Since there are no functions to learn and everything is done intuitively, even inexperienced developers can create complex Web applications and services quickly.