What are some alternatives?
When comparing Illustration Gallery and unDraw, you can also consider the following products
Evie by unDraw - MIT licensed illustrations for your next project
DrawKit - MIT licensed SVG illustrations, in 2 styles
Absurd Design - Free surrealist illustrations for landing pages. 💡
Sketch - Professional digital design for Mac.
Illustrations.design - Unique, mix-and-match Illustrations to speed up or inspire your next project
Humaaans - Mix-&-match illustrations of humans with a design library.