The award winning reference management application Papers has just been updated to version 2.2

• Recent papers search for Authors and Periodicals
• Auto-complete of authors and sources in the inspector
• Editing of multiple papers at once and duplicate merging of papers
• Merge and split any duplicate or incorrectly merged sources
• Displaying and navigation of notes and highlights in the inspector
• Addition of tools to allow page rotation and hiding a PDF coverpage
• Creating of collection hierarchies upon import of folders
• Return of column mode for search results in the search section
• Support for inserting footnotes in Microsoft Word
• Improved Papers for iOS syncing

The full list of new features are described here.

There is a list of reference management applications here.