Live Search in more than ten Wikipedias and dictionaries with iPhone and iPod Touch optimized interface.
Features:
-Live Search
-access to the ten most complexed Wikipedias and more
-optimized Wikipedia view
-dictionaries

http://iphone.coium.com

Keep track of the fuel efficiency of your car.Entering the odometer reading and the fuel bought every time you refill your tank you will be aware if your car is working as it should.

http://miles.dynadel.com

Vitalist is a great free ToDo application which allows you to create a wide variety of ToDo items, and has a very nice interface.

http://iphone.vitalist.com

reQall helps you remember all the big and little things in your life. Just call reQall and say what you want to remember before you forget. Then recall what you need with your phone, your computer, and on the web. Now with reQall for iPhone, both the phone and web experience is nicely integrated into one.

http://www.reqall.com/web/

A simple mortgage calculator for your iPhone.

http://iphav.com/mc/Mortgage.html

Media DB allows you to keep track of your entire Movie, Game, and Book collection, including the ability to rate titles, mark if you have read books, and list which media you have loaned out and to whom.

http://www.djkev.com/apps/iPhone.php

Check your flight status on the go.

http://mobile.flightstats.com/go/Mobile/

Keep track of your budget from your iPhone with MyBudge.

http://mybudge.com/sessions/new

Caltrain schedule for iPhone. Easily lookup return trips and last trip.

http://icaltrain.com/iphone.php

One touch dialing of phone services such as Free411 and more.

http://cocoaapp.com/callme/