ANTLR - ANTLR, ANother Tool for Language Recognition, is a language tool that provides a framework for...
textX - textX is a meta-language for building Domain-Specific Languages (DSLs) in Python. It is inspired by Xtext. It will help you build your textual language easily. You can invent your own language or build a support for an existing textual language.
parboiled - Elegant PEG parsing in Java - lightweight, easy-to-use, powerful.
LiveAgent - LiveAgent is a fully-featured web-based live chat and help desk software. It harnesses the power of a universal inbox, real-time live chat, built-in call center, and a robust customer service portal. Start your free 1 month trial today!
Ragel - Ragel compiles executable finite state machines from regular languages.
dropincc.java - dropincc.java - A small and easy to use parser generator.