It is known, that the challenge checkers are not used only for creating challenge checkers, but also as a database for statistics or searching for special caches or logs, because of awesome possibilities of the scripting language.
I know there are challenge checkers to search for shortest logs and similar (by Target.?) but also other scripts. I saw some of them posted here in the QA, but no complete list and I believe many people don't even know about this possibility (which is unfortunate). I also understand that it is somehow gray ground so if there will understand if there will not be a will to aggregate them. But it is worth the attempt :)
Is there a list of such checkers or would it make sense to create such, on this QA or somewhere on the site? On "virtual" GCcode?