MooTools will not work with most javascript libraries. The following list is just a really short example of what MooTools will not work with.

• Dojo
• Prototype
• jQuery (Might work with noConflict enabled.)
• YUI

What if you write your own library? Well, if you use any Class names such as Fx or Class or function names like $, you'll find your code or MooTools code borked. In addition to that, if you use native properties of _proto_, the prototypes in JavaScript, MooTools probably will break your code since MooTools modifies a lot of prototype stuff.

The MooTools Team has a good reason for making MooTools work this way.

• Code would not be optimized if two libraries are included.
• Javascript naming conflicts are a pain.
• Development focus on playing nice rather then innovation.

There are other things, of course, but these are major ideas that the Team follows.

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