Degei Husbandry Database seems pretty popular. I am a registered user but have a few issues with it and don't use it as much as I'd like due to quirks, and it is poorly documented. (I'm in the IT field so I tend to be rather picky about software and documentation.) I have 95% of my animals entered in the database. Sadly, I still do most of my tracking using notecards then periodically update my database when a notecard fills up... kinda defeats the purpose!
There is a free fully functional demo version available to try out. Take a look at
http://www.eyehit.com/degei/
Dan
