Here's most of the lifts and jacks for servicing bikes in no particular order...

One thing to consider when buying a lift is the length of the cradle that supports the bike on the rubber cushion. Some lifts are only 12" long here and barely make it from frame rail to frame rail. The better lifts have 15'-16' cradles for better stability along with extensions for the tie downs bringing them to over 17" total.

1... Dunwell Jacks... (possibly out of business)
http://www.dunwelljacks.com/

2... Discount ramps...
The Black Widow motorcycle lift table and stand (http://www.discountramps.com/motorcycle_lift.htm)

3... Pitbull...
Pit Bull Motorcycle Lifts, jacks, are the perfect bike accessory
(http://www.pitbullmotorcyclelifts.com/)

4... Eagle...
http://66.113.231.142/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=LI-MC&WT.srch=1

5... Service Equipment...
motorcycle lift, ATV lift and motorcycle lifts at discount prices from ASE (http://www.asedeals.com/ATV_motorcycle_lift.html)

6... Cal Products...
Motorcycle Lifts from Cal-Products - Easyroller, C-Lift and Mega 1500 (http://www.cal-products.com/lifts.html)

7... J&S jacks...
J S Jacks Heavy Duty motorcycle lift, motorcycle jack for Harley Davidson Motorcycles (http://www.jsjacks.com/)

8... Cycle Lifts...
http://www.cyclelifts.com/

9... America's Pride...
Motorcycle Lifts (http://www.americasprideonline.com/Motorcycle-Lifts-1-47-.ViewProducts)

10.. Sears Lift... (enter bike lift in search)
Sears (http://www.sears.com/sr/javasr/search.do?BV_UseBVCookie=Yes&displayTarget=searchresults)

12.. Harbor Freight..
http://www.harborfreight.com/cpi/ctaf/Displayitem.taf?itemnumber=2792

13.. Larin Lifts...
Motorcycle Lift: motorcycle cover, motorcycle covers, motorcycle stand, motorcycle jacks (http://www.garage-toys.com/motorcycleshop.html)

14.. Build your own $20 lifts for the bare necessities.
The Sportster Home Page (http://www.sportster.org/tech/rickko-lift/)

and..

$20 Bike Lift (http://www.nightrider.com/biketech/bikelift.htm)

I bought a set of plans from a website, afabonline.com. These plans were for a do-it-yourself lift table that uses a floor jack. The plans are well written and have a detailed materials list. I took the materials list to a local ag-fab shop and they cut all of the metal for me. All I had to do was drill and weld the parts (of course, you have to have a welder). The table works great, and I wouldn't be without one now.

Here are a couple of photo's: