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