Lifehacker: With a little spreadsheet magic and a few choices of our own, we bring you the top 50 free apps we're all most thankful for. Whether you're celebrating the holiday or not, it's a great list of free software that ought to make for some gluttonous downloading. The popular apps are some of the more obvious, however, so be sure to look further down the list for new free software you may not yet know about. Happy Thanksgiving, everybody!
