Design Pickle - Unlimited graphic design services for flat monthly fee
Looka - Make a logo you’ll love with Looka Logo Maker.
ManyPixels - Unlimited, on-demand design services for freelancers, startups, and agencies.
Logo Dust - Free logo designs for your projects, added every week
Kimp - Kimp is an unlimited design company, specializing in graphic design (including print and digital designs, custom illustrations, landing page designs and email designs) and video design.
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.