Oh! I've never heard of that one.

I pre-ordered a pair of the mobile phones. I eventually got them. They aren't very good, but I have them.

I'd say the most helpful thing they've done is lead the way on adapting Linux and its applications to display and be interactive on small touchscreens. Many people wanting to run Linux on a phone will have Purism to thank for making it viable. They made a lot of upstream contributions.