Stock agencies offer the opportunity to sell or buy pictures (photos and other artwork) or video (footage).
On this page you see links to several stock sites where I have a portfolio.

shutterstock
__________
My portfolio Mostly deleted, rest disabled. Reason: https://twitter.com/hashtag/BoycottShutterstock

fotolia
__________
My portfolio with Fotolia and Adobe Stock. Fotolia has become Adobe Stock since November 2019.
alamy
__________
My portfolio
Create account