jQuery is free, open source software, dual-licensed under the MIT License and the GNU General Public License.
- DOM element selections using the cross-browser open source selector engine Sizzle, a spin-off out of the jQuery project
- DOM traversal and modification (including support for CSS 1-3)
- CSS manipulation
- Effects and animations
- Utilities - such as browser version and the each function.
Open Souce jQuery Information:
- License: MIT, GPL