It was a sad day when this easy database of paragliders,, went dark. I don’t know the story but the owner just let it die. 

At this point the best we have is an archived version of it as it was in September, 2018 which, for now at least, is available here on the “Wayback Machine,” a web archive site:

Paraglider Wing Specifications website wings home page

Another site has, has started doing a similar thing, but with better search criteria. It appears to be mostly crowd-sourced and is currently far less populated but manufacturers or individual pilots participate, it will become hugely useful.