Collaborative Typefaces

Hi everyone,

I'm looking for typefaces that were designed / created by a collaboration between a group of people.

The most prominent project that comes to my mind is Font Aid, but are there any projects like this where a functional typeface was created?

Whether it's an open source project or perhaps even just a collaboration between a small group of typographers, both old and new, I'm really interested to find out about them - if they exist.

Thanks amigos.