pyPEG is a quick and easy solution for creating a parser in Python programs. pyPEG uses a PEG language in Python data structures to parse, so it can be used dynamically to parse nearly every context free language. The output is a plain Python data structure called pyAST, or, as an alternative, XML.
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.
The Virgil Programming Language is designed for building robust, flexible, and scalable software systems on embedded hardware platforms such as microcontrollers. Virgil builds on ideas from object-oriented, statically typed languages like Java, providing a clean, consistent source language. Its compiler system provides an efficient implementation for resource-constrained environments.
JetPAG is a flexible yet powerful full-LL(k) parser and lexical analyzer generator focused on high performance, efficiency, usability, and readability of generated code. It generates powerful optimized recursive descent recognizers, and supplies a small library that can be used to do minimal parsing needs. Generated code is nicely structured and distributed over several files for easier management and integration into larger projects. JetPAG offers a powerful control over the generated source code, preventing post-generation modifications.