Popular bibliographic references manager. Integrates with TeX, creates citations and, duh, bibliographies. Lots of drag and drop and cut and paste.
BibDesk is designed to help organize and use bibliographic databases in BibTeX .bib format. In addition to manual typing, drag & drop or cut & paste .bib files into the bibliographic database and automatically opens files downloaded from PubMed. Also keeps track of electronic copies of literature on your computer.
9WR – BibDesk: Bibliographic reference manager, creates citations, bibliographies, features drag, drop.