This is a three year average of the top mock drafts and draft boards.
Scott Wright typically does a great job of projecting who teams will pick. He's the owner of the nfldraftcountdown site.
The Huddle Report typically has a close to accurate draft board, but they have become a fee site.
GBN Draft Report, Colin Lindsey's site, is probably the best free draft board you will find. You could probably get a pretty good idea of who will be available by looking at his draft board.