WidgetPublisher:Netvibes
Netvibes is a multi-lingual Ajax-based personalized start page or personal web portal much like Pageflakes, My Yahoo!, iGoogle, and Microsoft Live. It is organized into tabs, with each tab containing user-defined modules. Built-in Netvibes modules include an RSS/Atom feed reader, local weather forecasts, a calendar supporting iCal, bookmarks, notes, to-do lists, multiple searches, support for POP3, IMAP4 email as well as several webmail providers including Gmail, Yahoo Mail, Hotmail, and AOL Mail, Box.net web storage, Delicious, Meebo, Flickr photos, podcast support with a built in audio player, and several others. A page can be personalized further through the use of existing themes or by creating your own theme. Customized tabs, feeds and modules can be shared with others individually or via the Netvibes Ecosystem. For privacy reasons, only modules with publicly available content can be shared (Source: Wikipedia).
Widgets can be installed on Netvibes using a simple link.The URL can be built programatically as follows:
http://www.netvibes.com/subscribe.php?module=UWA&moduleUrl=http%3A%2F%2Fwww.widgetavenue.com%2Fwdg%2Floaders%2Fuwa.php%3F[Encoded list of args]
For example,using the Hello World widget built here, if your source HTML file is located at http://myserver.com/HelloWorld.html, you will be able to install your widget on Netvibes using the following link:
http://www.netvibes.com/subscribe.php?module=UWA&moduleUrl=http%3A%2F%2Fwww.widgetavenue.com%2Fwdg%2Floaders%2Fuwa.php%3Froot%3Dhtml%26url%3Dhttp%253A%252F%252Fmyserver.com%252FHelloWorld.html
If your URL is correct, you should get something similar to this.
Storing Custom Preferences is supported