The best alternatives to Slogan are Withoomph, Brandmark, and Logaster Logo Maker. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of Slogan?
Haggle — A CTA buyers want to click, when they aren't ready to demo
Brandmark creates a unique logo, color scheme and website template in seconds. It uses deep learning to understand your stylistic intentions, creating a unique brand every time.