Here is a roundup of some of the most promising ideas of 2009, Please tell me about the ideas which you feel are promising in comments.

80legs

80legs is a platform for running web-scale applications, or any application that requires fast access to data from across the entire Internet. We give developers access to the bandwidth and computing power of over 50,000 computers at prices anyone can afford. With 80legs, web-scale analysis is for everyone.

PhoneGap

PhoneGap is an open source development tool for building fast, easy mobile apps with JavaScript.

If you’re a web developer who wants to build mobile applications in HTML and JavaScript while still taking advantage of the core features in the iPhone, Android and Blackberry SDKs, PhoneGap is for you.

DubMeNow

DubMeNow allows you to create a mobile business card which you can share with anyone through the cloud. In turn your contact’s info loads directly into your existing mobile address book and is automatically updated whenever your contacts change their information.

Bantam Networks

Bantam provides online workspaces for business teams that are powered by network-driven collaboration, live streaming of content and messaging, and social CRM.

ZeaLog

zeaLOG is a life tracking site for keeping track of your personal metrics or just about anything else. The best part is you don’t have to go it alone. Join your friends to harness the power of peer pressure for good. Work together to keep track and measure up.