The CgToGLSL conditioner has been updated to version 1.0:

http://www.collada.org/mediawiki/index. ... onditioner

FxCleaner is a new conditioner for optimizing COLLADAFX-structures:

http://www.collada.org/mediawiki/index. ... onditioner

Both conditioners are documented on the COLLADA-wiki and released on sourceforge.
They are available for Windows and Mac OS X as Refinery-plugins or standalone command line tools.