- Powncified: This is the first mashup listed here built using the Pownce API. Powncified tracks the most popular links that are sent publicly on Pownce each day.
- popuri.us: A tool to check at-a-glance the link popularity of any site based on its ranking from Google PageRank, Alexa Rank, Technorati etc., social bookmarks like del.icio.us, subscribers on Bloglines, etc. Built using the Alexa Top Sites, del.icio.us, and Technorati APIs.
- TwitPic: This app lets you share your photos on Twitter. Uses the Twitter API and Flickr API.