The Behance PHP SDK by Behance allows API communication, useful to create an interface for portfolio creation. It includes authentication, installation with composer, and usage. Behance targets illustrators, graphic designers, and interactive artists.
Bryan Parker founded ImageFly out of necessity: "To be honest, I was fed up with having to bounce around between image libraries when I was hammering out a project. It seems like it was GD one day, RMagick the next, and something else the next." ImageFly exists to simplify image modification. The ImageFly API grants developers many image editing tools within web properties and applications.