This page benchmarks the performance of several matrix libraries intended for use with WebGL:
glMatrix (v1.2, 2011-12-13), mjs (rev 16, 2010-12-15), CanvasMatrix, EWGL_math (rev 32, 2011-03-15),
and the math utilities in Google's Closure (svn rev: 1364, 2011-11-3) and tdl (commit: 59d484f, 2011-06-03).
Benchmarks for each library are run in an iframe. Results measure millions of iterations per second of the target operation.

Adapted by Stephen Bannasch from the benchmarks Brandon Jones created in his glmatrix library.
Additional improvements by Gregg Tavares.
JavaScript Plotting library: Flotr; Sortable Table by Andrew Tetlaw.
The source code for these benchmarks can be found here on github. Pull requests quite welcome!