Simplistix was a software consultancy run by Chris Withers from 2003-2015. Due to other commitments, Chris has brought the formal existence of the company to an end.
The software is still available on GitHub at the following locations:
If you need any software from the old subversion repository, or one of the presentations I've given, please get in touch.
Sure, the best bet is to drop a message to the appropriate mailing list, for stuff that's not covered elsewhere, that's the Simplistix Google Group .
I'm also around on Twitter.