What are some of the best chatterbots?

What are some of the best chatterbots?

Cleverbot.com [1] is arguably the most popular.  The newly popular SimiSimi mobile app is perhaps a close second, particularly in Asia.  Wikipedia contains both a Category:Chatterbots [3] and a List of chatterbots [4].  Chatbots.org also maintains a relatively up to date Directory [5].

As for what “best” really means, the sky is the limit….  Guile3d.com Denise [6] is probably the best full featured desktop virtual assistant at the moment.  There are a number of learning bots available, such as Zabaware – Ultra Hal Assistant [7].  Ultra Hal is also apparently learning continuously in the cloud from Twitter, and can be interacted with on Twitter @UltraHal [8].  @twthal [9] is another interactive learning chatbot on Twitter by Ai Research (a-i.com).

[1] http://en.wikipedia.org/wiki/Cleverbot

[2] http://en.wikipedia.org/wiki/SimSimi

[3] http://en.wikipedia.org/wiki/Category:Chatterbots

[4] http://en.wikipedia.org/wiki/List_of_chatterbots

[5] http://www.chatbots.org

[6] http://guile3d.com/en

[7] http://www.zabaware.com/assistant

[8] http://twitter.com/ultrahal

[9] http://twitter.com/twthal