This research focuses on designing tools for visualizing and interacting with theoretical computer science concepts. New features in 3.1 include regular expressions, including conversions of regular expressions to NFA, and DFA to regular expressions. New features from 3.0 include several conversions from one representation to another. Two of the CFG to NPDA conversions are useful in studying LL and LR parsing. LLparse and LRparse have been combined into one tool.
Additional features show the parse tree or a derivation when parsing.
LLparse - This version is no longer supported. See the JAVA version called jeLLRap above. LRparse - This version is no longer supported. See the JAVA version called jeLLRap above. Xtango and Samba are available from Georgia Tech here .