as3potrace is an Actionscript 3 library to trace bitmaps.
It is a port of the well known C library potrace by Peter Selinger. To be more exact, it is a AS3 port of Vectorization, a C# port of potrace 1.8 by Wolfgang Nagl.
For more info, please see my blog post on as3potrace.
as3potrace is licensed under the GPL (see LICENSE for more info).