Developers are already beginning to brainstorm and develop proof-of-concept applications for the iPhone. iPhone Geek won’t be publishing dedicated entries or reviews for apps until they’ve been tested and actually confirmed working on the device. We’re working on a few of our own, and I must say that there is a lot of guesswork involved at the moment in exactly how the pages will render, and what javascript will actually work — both key considerations when designing web apps for the little bugger.Anyhow, there have been a few apps out the gate already that might be of interest, if only to spark ideas for those of us planning on coding for the new platform:

OneTrip Shopping List

Single user, newton-esque drilldown shopping list. Of interest because the interface is rather well thought out, even if the predetermined choices are rather limiting.

Digg for the iPhone

Extremely simple RSS feeder that pulls in Digg. Only barely qualifies as an iPhone app because it apparently doesn’t blow up at 320 pixels wide.

Gass.app

Finds the cheapest gas in your area.

iChat for the iPhone

Web based front-end to AIM. Security is a bit of an issue (your password is stored on the server), and stability will be an issue soon (his server can’t handle too much traffic and limits sessions to 10 minutes), but it’s a great proof of concept to work around perhaps the most glaring omission in the built-in application lineup.

YouTube for the iPhone

Youtube’s official portal for the iPhone and mobile devices.

iTweetr

An iPhone interface for Twitter.

If you know of any other pre-release apps, please post them here. By launch day, we’ll have a Versiontracker-style apps directory ready to rock and customized for the iPhone’s display.