I understand that fashion is a pure coordination game, so you would expect every website to look the same, but man, this style of illustration that is absolutely everywhere gets annoying very quickly. (Or is it just me?)
* Plaid — https://plaid.com
* Airtable — https://airtable.com
* Blogsend — http://blogsend.io
* Twist — https://twist.com
* Humaaans ("dopey cartoon people" as a design product) — https://www.humaaans.com/
* Personas ("dopey cartoon people" as an avatar) — https://personas.draftbit.com/
* Pastel (recently refreshed their site) — https://web.archive.org/web/20180203192541/https://usepastel.com/
* User Testing (recently refreshed their site) — http://web.archive.org/web/20190201001118/https://www.usertesting.com/