Browse references both in database and those cited in the current document side-by-side. Get quickly an idea, how many and which references you are using plus how often each reference is cited.
Quick search for authors and keywords. Searches are remembered and can be quickly accessed (or re-executed) later.
Easy copy-and-paste of references into the document using the system clipboard and your favourite editor (including MS Word and OpenOffice).
Jump to the place a reference is cited in the current document. (I think this only works with MS Word at the moment.) For most document types, you will be able to quickly open the current document for editing.
Start PBib, i.e. process the current input document to create one with formatted citations and list of references.
Import and export of references to the bibliographic database in various text-based formats. (Not all database types support import yet.)
Quick-export of a single reference in various text-based formats (such as BibTeX, HTML, Endnote, Refer/Tib) and quick-import from the Reference dialog.