I've been looking for the same thing myself, though it does depend on what one's interpretation of 'manager' is:

I used to use powermarks which was pretty good http://www.kaylon.com/power.html You can upload your favorites to The Web and retreive/update from home/work/where-ever.

I've been using approcket from http://www.candylabs.com/approcket/ It takes a lot of getting used to and uses far too much memory (that's .net for you) but it works very well for calling up any favorite, program or even an mp3 using the keyboard alone. I think it even learns a bit too and moves what you use often to the top of the list of possibilites.

An alternative to approcket is 1st turborun http://www.turborun.com/ Very small memory footprint, the free version does URLs only and might be just what you need. The paid version is not as versatile as approcket but it is small.

With both the above, the idea of typing a key combination and a couple of letters to get to the app/url/mpg you want is extremely attractive.

Bookmark Buddy and it's kin are just too fiddly for me and don't really improve a whole lot on what any browser provides. Linkman is a similar program.

I'm still on the lookout for the perfect manager, something like approcket with the size of 1st turborun and the ability to call upon an am-deadlink http://www.aignes.com/deadlink.htm type verifier.

Please excuse any meandering.

43, from UK.
Joined british army at 16. Became an electronic warfare operator, learnt (some) arabic, left in 88.
Truck driver for a while, then drainage engineer (no Job too big!). Spent summers working in France as an area supervisor for camping holiday company. Got first PC.
Called back to army in 91 for a brief waste of time.
Went fulltime with holiday company, running warehouse in winter and supervising in summer. Left in 94 to start a degree in Computer Science (systems). Did some contract PC engineer work for us army in Germany.
96 I was offered a job overseas as sotware support for british army. Had to leave university with one semester to do. Did that for 3+ years. Met my wife (to be) on Yahoo.
2000 moved to USA and got married. Got a job as Network Admin (read all IT) in small local company and been there ever since. Learning/using various languages. I remain a beginner at all of them. Jack of all trades, master of none.

I despise how they suck in any decent software house that produces anything that has a good chance of being serious competiton and turn it into a POS.

I can say that about a lot of the big software corporations too.