Logology - Get a designer-quality logo for your startup in 5 minutes.
Sketch - Professional digital design for Mac.
My Brand New Logo - Create your own professionally designed logo in 30 seconds. For freelancers, start-ups and other companies.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
LogoFreeway - Logo Creator / Logo Maker
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.