Mozilla Labs » Raindrop
http://labs.mozilla.com/raindrop

Raindrop is a new exploration by the team responsible for Thunderbird to explore new ways to use open Web technologies to create useful, compelling messaging experiences. Raindrop's mission: make it enjoyable to participate in conversations from people you care about, whether the conversations are in email, on twitter, a friend's blog or as part of a social networking site. Raindrop uses a mini web server to fetch your conversations from different sources (mail, twitter, RSS feeds), intelligently pulls out the important parts, and allows you to interact with them using your favorite modern web browser (Firefox, Safari or Chrome).

Looks promising as a client to manage email+Twitter+Facebook+Web2.0 messages and notifications.

Today we’re introducing Raindrop, an exploration in messaging innovation being led by the team responsible for Thunderbird, to explore new ways to use Open Web technologies to create useful, compelling messaging experiences. We hope to lead and spur the development of extensible applications that help users easily and enjoyably manage their conversations, notifications, and messages across a variety of online services. A central principle behind Raindrop is that messaging should be personal — we want Raindrop to be people-centric both in how we process messages, and in how we can help give people control over their personal data and experiences.

Today we’re introducing Raindrop, an exploration in messaging innovation being led by the team responsible for Thunderbird, to explore new ways to use Open Web technologies to create useful, compelling messaging experiences. We hope to lead and spur the development of extensible applications that help users easily and enjoyably manage their conversations, notifications, and messages across a variety of online services. A central principle behind Raindrop is that messaging should be personal — we want Raindrop to be people-centric both in how we process messages, and in how we can help give people control over their personal data and experiences. When a friend’s link from YouTube or flickr arrives, your messaging client should be able to show the video or photos near or as part of the message, rather than rudely kicking you over to a separate browser tab. Notifications from computers and mailing lists should be organized for you.