We've searched every corner of the web for the most useful (and useless) sites you've never seen. Download free movies and music, find the cheapest shopping sites, get a degree, make money, walk on Mars and much more.

The Grolier Multimedia Encyclopedia has been a mainstay of electronic educational resources for many years: I remember it being bundled with the first 386 I bought back in the early nineties, and was impressed back then at the video and audio clips, maps and information contained on the CD.

Consistently attracting one of the largest online groups is the first person shooter (FPS) genre. While the flavours vary, most FPSes boil down to the player moving around three-dimensional maps, pick

GPS units are now mainstream, and the prices have never been better - the Tomtom One in particular is an incredible bargain, and it's been on our A-list for a full two years. Around Christmas time, it's relatively easy to find deals that include pouches, external antenna, screen protectors and other accessories: shop around before buying.

Smart, clever and capable. A couple of imperfections keep it off the top spot, and we might be tempted by the camera-less S70, but it's a fine choice

An inexpensive, neatly designed sat-nav that happens to offer additional travel info if you want it

Incredible images and places to explore the stars of the night sky, photo albums of nebulae, galaxies, and breathtaking maps of the universe

'Minority Report' interactive interface unveiled.

LG hasn't been shy about showing off some futuristic goodies at this year's CES.

The Road Angel Navigator may have its imitators, but nothing comes close to being as fast, accurate and usable

Buy an Edge and you won’t need to strap another gadget to your bike

Cheap robo-vacs used to be a no-no, but this one is top-notch. Not Dyson standards admittedly, but far more relaxing

Download the bookmarks to the 50 Web Secrets websites feature from PC Authority September 2007.

Part of the appeal of science fiction is its ability to transport you to other places, something these web sites do to great effect with artwork, movies and more.

Once you've tasted the freedom of surfing the Internet on your smartphones, it's hard to go back. Fortunately, a number of mobile phone providers offer great deals on smartphones with included data. We've assessed their ease of use, features and handset design.

Almost on a par with the best value sat-nav – TomTom’s ONE – and with features that might make it more attractive to you

With the iPhone (presumably) only a few months away, we compare how Apple's touch screen marvels compare.

VoIP, messaging, video and GPS coming to the console.

Specialist developer ProSim, which cemented its reputation with the impressive Armoured Task Force wargame engine, now takes things a little further with Raging Tiger: The Second Korean War.

Just as supercomputers have played a key role in unravelling the genome code...