Elements for Sketch - High-quality UI Kits in Sketch, for free
Looka - Make a logo you’ll love with Looka Logo Maker.
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.
Logo Dust - Free logo designs for your projects, added every week
DynaMaker - Cloud service for Visual Product Configuration with parametric geometry and CAD / BIM
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.