javascript for rendering abc music notation
This library makes it easy to incorporate sheet music into your websites. You can also turn visible ABC text into sheet music on websites that you don't own using a greasemonkey script, or change your own website that contains ABC text with no other changes than the addition of this javascript file.
License: GNU GPL v3
ABC standard is pretty much implemented
In addition to the standard, ABCXJS can be used for accordion tablature generation.
Retired Raphael and implemented a lightweight version of the SVG driver.