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If you have kids of a certain age, chances are, they're on Facebook. A lot. Connecting with friends you may--or may not--know. Talking about things you may--or may not--understand. Keeping them safe can seem like a daunting task, but it's one that's a lot easier with the help of MinorMonitor. This free, Web-based app competes with pricier solutions such as SocialShield and ZoneAlarm's SocialGuard, and does an admirable job of alerting parents to potential threats.

There are free and open source alternatives to just about every proprietary software package available today--the trick is just finding the right ones for your business.

With the possible exception of GNOME 3, few recent innovations in the Linux world have proven as controversial as the Unity desktop included in Ubuntu 11.04 "Natty Narwhal."

WebFilter is a free Chrome extension designed to block access to objectionable or dangerous sites, including those that are pornographic, harbor malware, show drug use, or are heavy bandwidth users. It's a generally useful tool, although it is somewhat marred by its surprising inability to block at least one very obvious problematic site.

The free TrackMeNot Firefox add-on takes a unique and creative approach to protecting your privacy from search engines that can create profiles of you based on terms you search for. Rather than hiding your searches from them in some way, it takes the exact opposite tack: It inundates search engines with a blizzard of background searches from you, so that no practical profile can be built because there are too many random searches. It generates those search terms from a group of RSS feeds from sites including the New York Times, CNN, and others.

FreeOTFE may sound like a political bumper sticker, but it stands for "Free On The Fly Encryption." The "Free" part is self-explanatory; "On The Fly Encryption" refers to the encrypting/decrypting of data as it is written to or read from your hard disk.

Microsoft Word is ubiquitous: It's the standard word processor in most places of business, and it often ends up installed on home PCs due to compatibility and familiarity. It isn't the only choice, however. Whether your main concern is price, complexity, specialized functionality, system footprint, or some combination of the above, you might have many reasons to look beyond Word.

ConTEXT is a powerful, free, and open-source text editor squarely aimed at programmers. Its feature set makes it especially useful for system administrators, toolsmiths, and Web mavens, all of whom often have to juggle many small files written in a variety of languages or markups.