jCanvas is a plugin for jQuery that simplifies using HTML5 canvas with various methods offered.
There are many ready-to-go shapes like rectangles, ellipses or arcs and methods for using images or text.
It is possible to define the dimensions of the canvas, where the drawing will start from (x, y) and much more.
For styling, colors can be mentioned as names, HEX, RGB or RGBA, and gradients or patterns can be used.
The plugin is being improved and new features are improved frequently.
Download jCanvas jQuery Plugin
Requirements: jQuery 1.4+
Compatibility: All Modern Browsers
Website: http://calebevans.me/projects/jcanvas/
Demo: http://calebevans.me/projects/jcanvas/sandbox.html
Download: http://calebevans.me/projects/jcanvas/download.html