Most of these are my personal published side projects.
I use them a lot and hope it helps someone who needs it too.
Self-hosting Web Service
LyricsCloud is a self-hosting web service which can management, search artworks and lyrics.
It's the middle man of iLyrics widgets.
They may still works but out-dated or drop support by its platform, consider using above apps instead if any.
Dashboard widget for Mac OS X 10.5+
Auto discover the artworks, lyrics of current playing song from iTunes.
Requires iLyricsCloud as backend.