I am in a process to select javascript library for our new web application. This app is not very UI heavy but has forms, reports, search, calendars, tabs and target multiple countries like most web apps.

We are a tiny team. Biggest concern is maintainability and readability of the code.

We are Python programmers. After evaluating many other javascript frameworks we have narrowed down to mootools and google-closure. We loved mootools syntax. It took us no time to learn. It's like Python. On other hand we were stumped seeing private/public in google closure.

It's tempting to go for mootools however, I would love to hear from you about specific advantages these frameworks offer over each other.