DeviantArt - deviantART was created to entertain, inspire, and empower the artist in all of us.
Behance - The Creative Professional Platform.
ArtStation - ArtStation is the leading showcase platform for games, film, media & entertainment artists.
500px - Connect, get inspired, and grow your skills.
Logamp - Share your creation such as music, art and literature. Get sharing, it's free.
Dribbble - Shots from popular and up and coming designers in the Dribbble community, your best resource to discover and connect with designers worldwide.