Open Basic (OB) is an implementation of the BASIC programming language. It is intended to for embedding into user applications as a scripting language. User-defined functions can be written in C/C++, assembler, or other languages and can be activated from BASIC programs, receive parameters of different types, return their results.
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.
Gimp User Filter is a work-alike to Adobe's Filter Factory. It is a generic image processing plug-in that can be used to create new filters for The GIMP without having to go through the process of learning about The GIMP's SDK. Many freely available filters that have been created for Filter Factory can also be used with this plug-in.