Nestor is a chat client that determines words in the conversation that the user may not completely understand, and provides information about these words from Wikipedia and dictionary.com.
VirtualRuben is a small application that sends messages using the xmpppy library, to a group of people. Future plans include support other protocols and time programmable messages chat bot functionalities.
bondus is a status publisher and tracker program. It bonds people together by informing each other on their current status. It adopts the publishing/subscribing idea that is used in technologies such as RSS and Calendar sharing.