Scalable Vector Graphics

SVG news page.
SVG Specs should have the latest specifications for SVG.
SVG syntax.
ImageMagick.
Zvon has on-line references for SVG and other XML formats.
CGM Open maintains WebCGM information relating to graphics metafiles for use on web pages.

Non-mainstream Browsers that support SVG

X-Smiles Viewer
Squiggle (part of the Batik distribution).

Vector Graphics Editors