Greasy Fork is available in English.
mTurk HIT Submitted Detection and Coloring (Wage Script Helper)
Detects form submits to tell the wage script whether an unloaded HIT was submitted as opposed to being returned or expiring. Latest: More detection methods for trickier HITs. Might need to be tweaked for any HITs with "submit" buttons that don't actually "submit" the HIT (I think Pinterest does this...).