Mac Platform: Intel
OS version: 10.7 or higher
Mendeley integration: When importing your Mendeley library, collections, annotations and keywords (tags) are now included.
Papers 3 for Mac now correctly attaches primary PDFs to messages when using Airmail or Airmail 2 with the "Send via Email" option.
Performance and Stability
App startup: Improvements to how the app accesses the user's library to reduce the likelihood of slow startup times, as well as improved performance during general app usage.
Dropbox Sync: Improvements to reliability. Previously when syncing after launching the app, UI refreshes for subsequent sync operations that changed the metadata of library items that had been changed during the first sync would often not occur until relaunching the app.
Reduces the likelihood of a crash during application startup.
Reader: No longer crashes when closing all Reader tabs using Cmd+W after launching the app in Reader mode.
Federated Search: No longer crashes when selecting "Others" when previously having one of the Favourite search engines selected.
Citations: No longer crashes when generating an example citation of a single publication.
Stability: Addressed the cause of a memory leak that could occur in certain scenarios.
Smart Collections: Nested Smart Collections are no longer shown in the pop-over when using the "Add to collection" option. This was incorrect and improves app performance with large libraries with many Smart Collections.
Keywords: When in the Labels mode, filtering now works correctly in the Keywords search bar.
Dropbox Sync: Author metadata for papers newly imported on another device is now display correctly in the Info Inspector without needing to relaunch the app.
Finder integration: Several improvements to the Finder Spotlight search feature.
Spotlight Search: Improvements to index rebuilding to prevent a crash in rare circumstances.
Papers 2 Import: Improvements to reliability during the import operation.
Author editing: Resolves a bug in the Authors screen where it was possible for the "Me" author to become un-editable.
Collections: Correct identation style for nested collections when viewed in the "Add to collection" pop-over from the Overview Inspector.
Freehand annotations: Improvements to the selection of previously drawn freehand annotations.
Look and feel: Tweaks to the look of some icons throughout the app.
Courtesy of The Shark
Your personal library of research
Papers is an excellent tool to search for journals and research papers and keep them well organized on your Mac. A must for scholars and researchers. Papers was built specifically for everyone working with journals and research papers as a means to search for more documents and keep them all well organized. Papers 3 helps you collect and curate the research material that you're passionate about. From citations to search, Papers will improve the way you find, organize, read, and cite. You'll immediately notice the elegant interface, with its list of papers, groups and search engines on the left, search results and documents in the center, and a right-hand side dedicated to Help tools. Papers is particularly good at handling PDF documents. Papers integrates dozens of research engines such as ACS Portal, Citeseer or Google Scholar. You can also add more as plug-ins. To keep your journals organized, you'll find Papers is not unlike iTunes: smart groups can be created so that you don't have to worry about what papers are stored in what folder. The Help section in Papers is particularly thorough and having the forums integrated into the interface with tips and tricks available any time is really useful. The Help center itself provides lots of guides to fully master the program. You'll be able to open multiple journals or search results in tabs, add comments and notes and even share documents easily with other people. Mny efforts have been aimed at making the importing and exporting of PDF documents much easier. However, some users may find that syncing with iPads is still very temperamental.
More info: http://www.papersapp.com/mac/