Vectr - Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
PixaPal - Create videos, graphics and documents online
Sketch - Professional digital design for Mac.
GIMP Online - Powerful graphics editor in the cloud
Adobe Illustrator - Adobe Illustrator is a vector graphics editor.