TagJet is a spreadsheet MP3 tag editor that can identify tracks and entire albums and then automatically add to them tags, album art and lyrics. As well as it has wide capabilities of manual editing and ability to make all operation in batch.
TigoTago is a spreadsheet-based tag editor for media files. Automated tags import from dicogs.com and freedb.org. Full preview changes before saving to disk.
The program seems to be no longer updated. Last version, 2.2, was released on 2012, but it can be still downloaded from the official website.
MP3 Toolkit is a free and powerful Windows app includes MP3 converter, CD ripper, tag editor, MP3 cutter, MP3 merger and MP3 recorder for users who want to handle MP3 files easier.
bliss performs all the hard work in organizing your music collection; making it consistent, correct and complete with little effort.
AudioGrail (Formerly K-MP3) is the swiss army knife for everything that is related to audio files (MP3, MPC, OGG...). It can very easily rename and tag (tag: info such as artist name, album, track title) your files automatically.