You can now upload and download crosshairs from the Steam Workshop

EZ-Crosshair

Enhance your gaming precision with EZ-Crosshair, a user-friendly app providing customizable crosshair overlays for a personalized and immersive gaming experience.

The Steam Workshop API has been integrated into the app, meaning you can see and use the best crosshairs from the community. You can also see your friends' crosshairs :)