This is the full source code for jQuery. The code, itself, is written rather cleanly -- in an attempt to be self-documenting. If you've spotted some areas of code that could be improved, feel free to discuss it in the #jquery-dev IRC channel or in [1](Bug Tracker).
All of the code is available in two formats: Compressed (which allows you to have a significantly smaller file size) and Uncompressed (good for debugging).
If you're interested in downloading plugins, developed by jQuery contributors, please visit the plugins page.
This is the recommended version of jQuery to use for your application. The code in here should be stable and usable in all modern browsers.
Distribution:
All source code is kept under Git version control, which you can browse online or fork to edit.
To create your own build of jQuery, follow the directions which are outlined in the READ ME file (provided in the Git repository).
jQuery has the following licenses (dual):