I have been developing applications in cairngorm framwork in flex for over 2 years. Now I have to develop applications using Mate framework. I have no idea about Mate framework and which one is better than the other. I also need to know where to start to learn Mate framework, if somebody has idea about both the frameworks, kindly throw the light on this area.
Likely if you've been working with one of the older versions of Cairngorm, you're going to have a hard time getting out of the mindset of reaching out and touching the Framework from everywhere that's induced by its Singleton based architecture. What you'll want to retain from what you've learned is your respect for event based communication. Probably not much else will be useful to you if you've been using the old Cairngorm. If you've been using CairnGorm 3, you will likely find yourself right at home, because Mate and Parsley are very conceptually similar, and Mate developers tend to perfer the Presentation Model pattern.
Here's a great video that will help you understand Mate at a conceptual level http://tv.adobe.com/watch/360flex-conference/mate-flex-framework-by-laura-arguello/ .
Here are some articles of mine that you might frind useful as well http://www.developria.com/2010/05/mate-for-framework-beginners.html http://www.developria.com/2010/05/refactoring-with-mate.html
Unfortunately the source code is not available at this time, as my subdomain that hosted them is down.