What are some alternatives?
When comparing Open Peeps and Control Illustrations, you can also consider the following products
Humaaans - Mix-&-match illustrations of humans with a design library.
Blush - Illustrations for everyone
Handsome Illustrations - Create unique illustrations for websites & applications.
Avataaars - Mix and match avatars with a Sketch library
Vector Illustration Creator - Create free personalized illustrations from 3000+ elements
Free illustrations - Find free to use illustrations & vectors