Zoterois a free, easy-to-use Firefox extension to help you collect, manage, and cite your research sources. It lives right where you do your work — in the web browser itself.

Not in the Top 100 in 2013

Website Cost Availability
www.zotero.org Free – Open Source Download
2013 2012 2011 2010 2009 2008 2007
- - 82= 57 - 66= 72=

Comments from some of those who selected Zotero as one of their Top Tools

free reference database, Sergey Litvinov, 2014

“is free, easy-to-use Firefox extension to help collect, manage, and cite research sources. I’m finding it very useful.”  Joan Vinall-Cox
“A Firefox browser add-on that “helps you collect, manage, and cite your research sources.” Great for conducting research.”  Matt Lisle
” I especially find Zotero is an unparalleled research and bibliography tool”  Terry Elliott