NLG systems

1) SimpleNLG (2009)
http://code.google.com/p/simplenlg/

2) FUF/SURGE
FUF: Functional Unification Formalism Interpreter
SURGE: A Syntactic Realization Grammar for Text Generation

http://www.cs.bgu.ac.il/surge/index.html (1999)
http://homepages.inf.ed.ac.uk/ccallawa/resources.html (newest version, 2005)

3) More in http://www.aclweb.org/aclwiki/index.php?title=Downloadable_NLG_systems

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Cheers,
Vu