To be used on Blog posts, etc.
You can use this website https://absurd.design/ there are a few good illustrations, also a free option is available.
As mentioned above (but clickable)
is close. There is a subreddit of illustrations
or if nothing is available then you can start a quick prototype community of designers who are willing to share & exchange their work via tools like HelloBox
Link to Telescope: http://telescopeapp.org :)
Icons, but still: https://thenounproject.com
I've been thinking about this for a while... Over the past year I've been creating illustrations for blog posts that have a one-time use. I'd be ready to upload them to a site if it could be used by others for their own projects. I'm sure I can convince other friends to do so!
Interesting - I've checked all the given examples and non of them are that great. Seems like their is no leader in this space and possibly a gap in the market :)
I realise this is an old thread, but would you be still interested in a service like this?
I'm in the early stages of planning just such a site, and came across your comment when searching for 'Unsplash for illustration'.
If so, please get in touch - it would be good to discuss it with you.