I used to EndNote in the past and my library collapsed multiple times before I was done with a single manuscript writing. I am now using Mendeley for over 2 years and found it great. Mendeley is freely available and gives you opportunities for organization and storage of library both local and online. People are also talking about Zotero and I just wanted to know the differences in features and reliability compared to Mendeley. Anyone with experience on Zotero willing to share some highlights?