Quality assurance - no longer working tools

See Quality assurance for working tools.

osmlab's to-fix^↙
to-fix is similar to MapRoulette (see previous); it shows a random error from a global list. Also available as a JOSM plugin.
So that is what inaccessible road is!^↙
So that is what inaccessible road is! - displays the road segments, which for various reasons are inaccessible (they are also called "not route-able parts of the road network") on a map and allows editing in JOSM or Potlatch.
analyser.openstreetmap.fr^↙
analyser.openstreetmap.fr is a relation analyse tool in real time. Given a relation id, it tests for validation of multipolygons of any kind, admin boundaries (and also linear relations to some extend).
OSMsuspects! ^↙
OSMsuspects! (Germany only) checks for wrong addr:city=*, addr:street=*, addr:postcode=* tags by comparing to OSM boundaries and public governmental data. Also checks if at least street and number is available on a address object. More info (german only).
Notes uses the same concept as OpenStreetBugs, which it has superseded.