The generator that is run here on AgeofStrife and you can see in my signature, and others in this forum, is based on what used to be hosted at 1stcav.net.
I don't know of anywhere hosting this particular generator any more for public use. A number of people have been using the one I have here but I will be blocking all non-AoS members in the near future, I'm just having a break from WoT for a while as I've been playing other games recently. If you're here just to get a WoT signature then as a site member you can create one at
wot/index3.php , however I can't guarantee how long it'll be available for.
You can download the source from
https://github.com/SkaceKamen/World-of- ... -generator - however note that it hasn't been updated with tank images from 8.6 or 8.7, you would need to contact the author to ask for it to be updated.
You could also take a look at
http://www.wotlabs.net and
http://www.noobmeter.com as they have signature generators too.