[ignoramous]

I have used undraw.co and the illustrations are plenty, neat, and customizable to a degree. For something that's royalty-free, it is an incredible body of work.

Here are some more related resources I've seen recommended by others:

Photoshop but for Illustrations (paid): https://www.drawkit.io/peach

https://icons8.com/ouch

https://www.humaaans.com/

https://www.manypixels.co/gallery/

[Vincenius]

I can add following:

https://illlustrations.co/

https://isometric.online/

https://www.glazestock.com/

https://lukaszadam.com/illustrations

https://woobro.design/

https://fresh-folk.com/

https://www.opendoodles.com/

[realvjy]

Thank you for adding to the list. Really appreciated. Maker of illlustrations.co :)

[hmhrex]

Thank you so much for all these resources! I've been looking for stuff like this for my next project.

[bjelkeman-again]

Another one I use a lot https://thenounproject.com/

[netcyrax]

Love the noun project

[vinrob92]

Thank you for mentioning the ManyPixels gallery! We set it up as we wanted to provide different style of illustrations. It is also a great marketing tool for our main business.

[thojest]

thx! here are a few more https://turtle.community/topic/design

[jonquark]

There are lots here: https://freesvg.org/ (It has the archive from the now-defunct (temporarily?) openclipart.org)

[jonquark]

A few details about freesvg rising from the ashes of the Open Clip Art Library are here: https://opensource.com/article/19/10/how-community-saved-art...

[tech4all]

Very interesting. Thanks for posting this... I had wondered what happened to openclipart.

[EGreg]

Anything available like Humaaans but for creating avatars with this? JS or PHP code to make some avatar based on a string or random seed?

[ignoramous]

I'm not sure what you're looking for, but https://startupstash.com has super nice collection of resources. Check them out.