Please see http://tug.org/tex4ht for current information about TeX4ht, including a bug tracker and mailing lists. tex4ht is still actively maintained, and many individual files have been updated; new versions are committed to the tex4ht and TeX Live repositories. Unfortunately, no full release of tex4ht has been made since Eitan Gurari, the original author, passed away. When a release is finally made (there is no ETA at present), it will be available here.