15. FeedReaderGet the news from all your favorite sites in one place with FeedReader. It's small (under 4MB), customizable, and ad-free.
16. Festoon BetaFestoon allows Skype, GoogleTalk, and IM users to talk to each other, even though they're on different networks. It also offers some fun video effects in the EyeCandy menu.
17. Firefox The tabbed Web browser from Mozilla gets kudos for its excellent security and ease of use. We also like the way it handless RSS feeds, not to mention all the add-ons.
18. FileZillaThis fast, reliable ftp client and server uses a simple two-pane layout. It's both secure and easy-to-use, and it offers enough features to satisfy most users.
19. FlickrUpload and share your own photos, or browse through everyone else's. Privacy levels allow you to protect sensitive shots, while the notes and tags make it easy to search the photo library.
20. Fox-It Reader At just 1.5 MB, Fox-It is much smaller and faster than the more commonly used Acrobat Reader (20MB for the latest version). Plus, the free version of Fox-It allows you to highlight text or save the file as text-only. As with Acrobat's product, you have to pay for the versions that allow you to edit or create pdfs.
21. FreeConferenceThe premium version with a toll-free number costs 10 cents a minute, but if you're willing to pay for the call (or use your cell phone) you can schedule a free conference call for up to 100 people that lasts up to 3 hours. Web scheduling and e-mail invites are also included in the free service.