Jitsu is a new web application framework. They call themselves "a next-generation user interface toolkit for building rich web applications"
Jitsu was developed by ATTAP, but has been open-sourced. The website is slick, and there is a well-written tutorial. Its a complete application framework, not something you can just add onto an application, so you really have to adopt it from the start. But its got a lot of nice features, and particularly strong bi-directional data-binding capabilities.
I haven't actually used it myself, but it looks very promising.
I'm really quite sick of all these frameworks.
Monolithic acheivements.
They're written by guys who know OOP and want to force javascript to do work like their favorite OO language. It's clear by looking at the API docs (if they exists) and/or source code.
I don't mean to put down Jitsu. The new framework mentality is the real problem.
"AJAX" frameworks are "2.0" and the new de facto. Everything has to be big and use remote scripting.
Here's a quote from Jitsu:
"...
To generate the "Hello World" application output you see above, a lot of work is going on behind the scenes.
..."
There is such a thing as too much abstraction.
Jim Ley is right where I'm thinking: http://jibbering.com/blog/?p=510
Garrett,
Jitsu isn't a framework for OO programming in JavaScript, but a framework for GUI programming in HTML. It uses JavaScript, of course, but it is more of an XML grammar (that gets compiled into JavaScript) than a JavaScript library.
@David - you make it sound even worse that Garrett did. ;-)