http://www.pocketcraft.com/ is the site and it lists v2.3 PalmGear shows 2.5 with the last update being 3-24-06.
I use 2Day by SHSH Software -
www.shsh.com/beta - that will get you to the latest releases/betas, and it is very stable and well supported.
I tried Today a couple of months ago and was not overly impressed, 2Day is under constant development, well supported, easy to use and install.
Ben