CLASSWORK

Eliza: answers based on keywords, she also make questions to see what else to say its dumbest of any other.

CleverBot: is more rude at the moment of answer the question you can see that is not a real person or its a psychotic, the design use more colors and better than Eliza but still a machine.

Exsys Expert Systems: Many of these systems are  not publicly available.
START:  a ‘Natural Language Question Answering System’.Web-based question answering system. Currently, the system can answer millions of English questions about places (e.g., cities, countries, lakes, coordinates, weather, maps, demographics, political and economic systems), movies (e.g., titles, actors, directors), people (e.g., birth dates, biographies), dictionary definitions, and much, much more.
Baby Rose: a web application which communicates with users in natural language.  A baby robot where users can teach new words this is more used to help people,Help Rose with word associations,Teach Rose with Q & A, Help Rose with Q & A associations.
Google Translate:  Translate a word or sentences in others languages. 
20 Questions:  the game is about answer some questions that the robots ask and the user have to answer so the computer can guest about the character.
Tic-Tac-Toe:   beat the computer. What does this tell you about the nature of some games?
Connect-4: Another example of game-playing 'intelligence'.
Wheel of Emotion Attempts to predict the user's emotion based on a sentence they type.

http://www.itgstextbook.com/chapter16-ai-robotics.html