Barcelona Street Art: Collection of street art photos with many works by Justin Case, an urban decorator living in Barcelona.
Dan Witz: Gallery of street art, excerpt from a roundtable discussion on street art, and essays.
Invisible made Visible - Urban Street Art: Image collection of urban street art photographed in and around east London.
Mind Hacks: Optical street art of Julian Beever.
Outside Institute: Gallery located in West London, founded to showcase street artists and promote the urban art movement. Provides information on artists, sample artwork and news.
Street Art Workers: Network of printmakers, stencil artists, graffiti writers and designers who use the streets for art and activism. Includes current and past projects.
Streetart: A collaborative weblog for photos of DIY posters, guerilla stickers and home-made stencils.
Streetsy: Image gallery of street art.
The Morning News - Paper Faces, Paper Cities: Pitchaya Sudbanthad talks to the street artist known as Swoon. Includes a gallery of her work.
The Morning News - Roundtable: Street Art: Pitchaya Sudbanthad discusses some of the legends of the scene and talks about the history of street art, and where it’s headed next.
TIME: Art of the Street Photo Essay: Images and commentaries of artists recreating the urban landscape.
Virtual Street Reality: Images of works by the English artist Julian Beever known for his art on the pavements of England, France, Germany, USA, Australia and Belgium.
Wikipedia - Street Art: Provides a general description of the art form and a listing of artists.
Wooster Collective: A Celebration of street art, stickers, posters, grafitti and culture jamming.