Excellent work. Please, an User Manual. You will sell a lot more.

This module approaches perfection. The extensible design is an excellent idea. The ability to define URLs using tokens is another good idea.
Friendlier URL provider is the best friendly URL provider for CataLook!. The default options work well, but if you want shorter URLs some test is required.
The description that you do in your website and in Snowcovered do not give a clear idea of how flexible is this module.
The only two  minor drawbacks I find are:
1 - Too much flexibility can lead to logical errors, such as defining the same URLs for different tabs (for example with tab specific rules), and in some systems, for example CataLook, it can be removed, from the URL, some elements that seem to use some modules to communicate between them.
2 - The help is good, but it would be require a User Manual with more detailed explanations and more samples.
In summary an excellent module that need more docs.