Inkscape
is a free vector graphics program supporting standard SVG format, as well as XML
and CSS standards. This program can do everything you'll need in a vector
graphics program - tracing, path operations, direct XML editing, etc. Import
and export formats include all the common image types, including JPEG, PNG, and
TIFF.
Inkscape
is available for Linux,Windows and Mac OSX.
Download
at https://inkscape.org/en/download/