AJAX
Teachess


Teachess provides a rich WPF graphical user interface that helps the course designer to quickly create one from scratch by simply dragging and dropping pieces and other visual elements (like balls, arrows and cell borders) into the chessboard. Courses are saved in human-readable XML files, so they can be edited afterwards.
Riff


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Features:
- Create collaborative workspaces, invite colleagues, subscribe to data sources you choose to monitor
- Interact securely with your team to sift through the data stream for emerging events
- Annotate items with tags, comments, ratings, links, locations, files, alerts, and other social metadata
- Autonomous agents perform data fusion, feature extraction, classification, tagging, geo-coding
- Integrated hypothesis formation, visualization, machine learning
De-Bee



Are you tired of struggling to keep track of shared expenses every time you meet with friends for lunch or pay something with other people?
De-Bee gives you a really simple way to deal with "I owe you"s and expense sharing. You can have as many groups as you want; each group has a number of people that share a common account.
Any exchange money situation with friends or with any acquaintance can be resolved with De-Bee. De-Bee informs you about your summarized situation for all groups and for each group in particular. Best of all, it's completely free!
Contacts Nearby


The Contacts Nearby application allows users to discover geographic locations of other people in their extended social network. Social networks or “friend graphs” are increasingly popular on the internet because they enable applications to learn of trust relationship between users. Combine this information with the geographical location of each user and you get a valuable tool in possible emergency situations.