The Housebot forum is definitely low-volume as far as the number of posts. Don't read that as a dead or dying product, however. HB is alive and kicking. Most of the people will only post if they have a specific problem, and to be honest, there simply aren't that many problems with Housebot. Scott is working horribly long hours on a new version - I'll leave the details of that for him to explain (He is a member of CT).
Personally, I haven't found anything that I couldn't do with Housebot. Like most other apps it has built in logic for doing most stuff, and what functionality isn't there can be extended either through VBscript or through custom plugins. It has wonderful "Swremotes" that give you that tasty touchscreen GUI like some of the big boys. The swremotes run on x86 PCs, as well as Windows PDAs with MIPS or ARM processors (most have one or the other). It supports Insteon, zwave, and of course X10. Everything was developed in C++ so the code is very tight and runs just fine on "yesterdays" hardware. My personal HB server runs Windows 2003 server and is a 833MHz P3 with 256 MB of ram - it's been up over a year without a reboot.
I'd recommend that anyone looking at HA software take a look at HouseBot. I think whoever tries it will be surprised at the amount of "bang for the buck" they get. If you do have a question, be sure to post it on the forum, usually you'll get an answer back pretty quickly.
Terry
