A new version of yampa<http://hackage.haskell.org/cgi-bin/hackage-scripts/package/Yampa-0.9.2>was uploaded to hackage today, but it's website <http://www.haskell.org/yampa/> hasn't been updated since 2004. SpaceInvaders<http://hackage.haskell.org/cgi-bin/hackage-scripts/package/SpaceInvaders-0.4.1>depends on HGL and Yampa. There's been more noise around Phooey<http://haskell.org/haskellwiki/Phooey>and TV <http://haskell.org/haskellwiki/TV> in recent months, but afaik, hasn't been used for any applications yet. There was also ParseP <http://twan.home.fmf.nl/parsep/> which seems to tackle a similar problem, but from the perspective of a more general parsing library. Are there other purely functional reactive libraries in active development? Why might one choose one over another? Thanks, Greg