So I am sure I am one of the last to figure this out, but it would seem that a website has sprung up and is maintaining a place to go and download some of the more popular and useful SMS tools such as SLAT, NetCrawler, etc.:  http://www.systemcentertools.com/ 

The site is run by Steve Bobosky who is the author of most of these tools and reports on the site.  Thanks, Steve, from saving me from bouncing between multiple blogs and web sites to find these tools!!!