Vectr - Free vector graphics editor. A simple yet powerful web and desktop cross-platform tool for everyone.
Looka - Make a logo you’ll love with Looka Logo Maker.
PixaPal - Create videos, graphics and documents online
Logo Dust - Free logo designs for your projects, added every week
GIMP Online - Powerful graphics editor in the cloud
Canva Logo Maker - Create your own custom logos without having to hire a designer with Canva's impressively easy to use logo maker. Completely free, completely online.