Online auctions have become one of the real success stories on the Web with many millions now buying and selling online.

The Auctions Top 20 brings you the pick of the most popular and highest-rating auction sites that make this possible.

The 20 best sites are brought to you on a single page, which gives you one-stop access to the best in online auction services today.

eBay
Originally founded in 1995, eBay has become the world leader in the online auction field with more items and categories than any of it's competition.
During eBay's evolution it has focused on areas of specific demand and now also has a number of specialty sub-sites such as motors, premier and professional services, as well as major regional sites in countries like UK and Australia.
Even although it has many other useful aspects, eBay's main focus is still on bringing the best auction experience to the buyer and seller in everyday auction transactions, and this is where eBay has really got it right, and the reason they maintain the mantle of leader of the online auction field. 
eBay is also the leading online auction provider in the UK and Australia:
eBay.co.uk
eBay.com.au

uBid 
uBid is an online auction house with a very large range. Services they provide include a "My Page" service, which consolidates all the user's activity in one place - useful for the user who is tracking a number of different auctions at the same time.
uBid's main page features the most notable and popular auctions which are closing soon and can be quite interesting to watch.

Bidz.com
While most other auction sites are searching for sellers to sell on their auction service, Bidz.com buy closeout deals in very large lots and offer them online in their no reserve auctions.
All auctions with the Bidz Auctions Guarantee logo are fully guaranteed so if you're not happy with your purchase, they offer a full refund and they are certified by BBBOnline's code of online business practices.

Because the offerings in the field of online auctions are so varied, it could be worthwhile looking through the whole list of auction sites, because a different organization's offering may be just the niche that suits your requirement best (and there are so many auction organizations online today).

I hope the auction top 20 takes you to what you are looking for in the growing world of online auctions. And, if you did find this top 20 listing useful, please remember to bookmark the page, it may be the only online auction reference you'll ever need. 

The Ed