A browser based piece of software capable of having a text-based conversation with a person. If you ask a question, it will answer back and most of the time it will give a reasonable response. It can be quite fascinating to talk to, and can sometimes present complex questions and problems.
Cleverbot is commonly believed to be fake, that the actual matter at hand is you talking to a series of random strangers (which would explain the randomness of some conversations). However, there is solid evidence against this.
First of all: Cleverbot speaks many languages. I have succesfully communicated with said in: English, Dutch, Serbian, French, German, and have observed fragments of: Spanish, Chinese, Vietnamese, Japanese and more.
Second: Cleverbot repeats sentences at times. When asked: "Sore wa nanidesu ka?" (Jap: What's this?), Cleverbot almost always (hilariously) replies with: "Sore wa Sparta!" (Jap: "This is Sparta!") This indicates the lack of answers in languages other than English.
Cleverbot also allows for speech recognition if used on Google Chrome. However, it is not recommended that this feature be used when communicating in different languages.
x: You are a robot.
Cleverbot: No YOU are a robot.
x: Go away.
Cleverbot: But I like you.