Inkscape

Inkscape is a great free program for creating vectors (scalable graphics that won't blur when you resize them). It's so good, in fact, that it's a serious alternative to premium tools like Adobe Illustrator.
Free vector illustration software Inkscape is compatible with SVG format, but can also important EPS, PostScript, JPG, PNG, BMP or TIP images and export PNG or other vector-based formats. Inkscape provides several tools and various shapes, paths, text, markers, clones, transparency effe