TrackSift v1.2.2 is up at the Mac App Store. TrackSift brings together nine fun and useful Tools for iTunes in one attractive, simple to install and easy to use app. Delete "dead" tracks, delete empty playlists, delete unwanted Genre names, locate tracks without artwork, without lyrics, or not in any playlist, and create one-hits, two-fers, and three-fers playlists. This latest version fixes a problem with the "Without Artwork" tool incorrectly reporting extant dead tracks and tweaks the "one-hits" tool algorithm. TrackSift is $1.99 at the Mac App Store.
Smarts v1.1.0 will save and store the criteria of an iTunes Smart Playlist the smarts of a Smart Playlist as a template so you can reload it into iTunes later. This version adds the ability to save a delete multiple selections and fixes a couple of minor bugs. Smarts is free and only available from the Mac App Store.