Quite conservative estimation of number of PCs and Mac’s running either Sciter or HTMLayout code is 50 million worldwide so far.
Thanks to Sciter/HTMLayout customers and their great applications.
UPDATE: I’ve been told that at least one of companies from the list has 90 million registered users. So the total number is way above 100 mln computers.
How do you know that number?
From official information published or otherwise reported by the companies.