42. StickyPadThis computer-based version of those yellow sticky notes can be a handy way to keep track of your to-do list. You can also set alarms to remind you of upcoming meetings or events.
43. SuperShredderNeed to make sure a file is completely removed from your system? SuperShredder makes sure your sensitive data cannot be recovered after you delete it.
44. SureCryptThis super-small (9k) encryption program can encrypt or decrypt files as fast as Windows Explorer can copy them. Because of its speed, SureCrypt is especially handy for encrypting very large files.
45. ThunderbirdThis e-mail app from Mozilla has more features than Outlook Express, but not quite as many as Outlook. It includes built-in RSS capabilities, junk mail filters, and anti-phishing protection.
46. Trillian BasicThis free chat client supports AIM, ICQ, MSN, Yahoo Messenger, and IRC. For $25 you can get video chat when you upgrade to the Pro version.
47. Ubuntu "Ubuntu" means "humanity to others," and the software markets itself as much as a religious experience as a technological one. The desktop version of this free Linux distribution comes complete with OpenOffice, Firefox, GIMP, email and calendar software, and a ton of other open source apps. The server version boasts that it can get a LAMP (Linux, Apache, MySQL, and PHP) server up and running in 15 minutes.
48. uTorrentuTorrent calls itself "a (very) tiny BitTorrent client," but offers most of the features of larger programs. It's just 170KB in size and usually requires only 6MB of memory while running.
49. Yahoo WidgetsKeep the information that interests you the most right on your desktop. The thousands of widgets at Yahoo include the usual weather, news, and sports scores, as well as games, puzzles, and talking caller ID.
50. Zoho Create and store word processing documents, spreadsheets, presentations, and even handle project management and CRM online. Most of these web-based office and productivity apps are free, but a few have fees depending on the number of users. It's compatible with both IE and Firefox, and it supports most of the common file formats.