There are many cool third-party applications being offered for the new iPhone, but these are our coolest so far. Do you dare to disagree with a shark?

Funambol: An open-source software development company that specializes in mobile application servers, is now providing a free open-source e-mail sync application for the iPhone.

RemindYou from Make Your Day Media: The concept behind RemindYou is remarkably simple — essentially, its goal is to make sure you never miss another appointment ever again.

Nuance’s voice search software: While the iPhone has revolutionized the way we surf the Web on mobile devices, it can initially pose problems for new users who aren’t used to typing on such a compact space.

HyperOffice: By now, everyone knows that the 3G iPhone will support Microsoft Exchange ActiveSync and Cisco IPSec VPN to give enterprise customers at least some assurances of security for sending and receiving corporate e-mails. The folks at HyperOffice, however, want to give you more.

MDialog high-resolution video sharing: By utilizing the MPEG-4 h.264 video codec standard and letting users upload videos of any length, mDialog is working to become a high-resolution version of YouTube.

AOL Instant Messenger for iPhone: An oldie but goodie, AOL’s Instant Messenger is one of the classic Web applications for chatting and keeping in touch with your friends.

eBay native iPhone app: Let’s say you want to bid online for a rare item, but you don’t have the time to sit in front of a computer screen all day. Simple! Just carry around your iPhone and use eBay’s native iPhone applications. It’s available at the Apple Store.

This is our round up of the best iPhone Apps.

What are your favorite iPhone Applications?