Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
1lyrics - 1 lyrics is one app for all your lyrics need.
Diigo - Diigo is a powerful research tool and a knowledge-sharing community
Musixmatch - - World’s Largest Lyrics catalog and official
Weava - Workspace to highlight, organize & collaborate on your research articles.
MetroLyrics - MetroLyrics is a searchable lyrics database featuring 1,000,000+ song lyrics from 20,000 artists. Use MetroLyrics to find your favorite song lyrics.