SVG Artista - Little tool that helps you create SVG animations
SVGO - Tool for optimizing SVG files
Get waves - A simple web app to generate svg waves, unique every time
Scour - SVG Optimizer / Cleaner
SVGator - Online SVG Animation Creator - No Coding Skills Required
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.