Diverse UI - Diverse representations of people for your mockups
Pexels - Find the best free stock images about Browser Home Page. Download all photos and use them even for commercial projects.
nappy - Beautiful, high-res photos of black and brown people
Death to Stock Photo - Free monthly photo packs for creatives
Mockupdated - Ethnically diverse mock-up templates for designers
Mailomix Stock Photo Search - The easiest way to find free stock photos online