Here is the full list of widgets available on Whaller:
HTML: allows you to insert pure HTML
Advertisement: allows you to create an ad for which you can see the number of views and clicks
Links: allows you to create a list of hypertext links
Image: allows you to insert an image
Sphere summary: displays the latest posts in a sphere
Video: allows you to display a video
RSS feed: allows you to display the latest news from an RSS feed, in the form of a SlideShare
Menu: displays CMS sub-articles
Scoop.it: allows you to display a Scoop.it
Resource reservation: displays the resource reservation calendar
Markdown: allows you to display content formatted with Dropdown
Newest messages dashboard: displays the latest messages in a sphere
iFrame: displays a link that opens the content of an iFrame in full screen
Twitter: allows you to display a Twitter feed
Media podium: displays a list of the most liked images and videos in a given sphere