Vector Magic - Easily convert JPG, PNG, BMP, GIF bitmap images to SVG, EPS, PDF, AI, DXF vector images with real full-color tracing, online or using the desktop app!
Vecteezy Editor - Free Online Vector Editor - Design and customize SVG illustrations and graphics quickly and easily in your browser.
Karbon - Karbon is the scalable vector drawing application in KDE.
Adobe Illustrator - Adobe Illustrator is a vector graphics editor.
AutoTrace - It is tracing program, so converts bitmap to vector graphics.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.