OutsiderArt.info -- online art gallery of self-taught artists  
   Site which showcases outsider artists. Art submissions and representation available.
   http://www.outsiderart.info

Jane's Addictions  
   Extensive overview of outsider/art brut/visionary arts and environments; also Southern folk pottery.
   http://www.janesaddictions.com

Anthony Petullo Collection  
   Self-taught art with heavy European influence. A comprehensive non-profit reference site.
   http://www.petulloartcollection.com

Raw Vision Magazine  
   Promotes Raw Vision magazine and outsider art.
   http://www.rawvision.com/

Interesting Ideas  
   An eclectic site featuring outsider art links, roadside art, and other tributes to popular culture.
   http://www.interestingideas.com/

Intuit - Center for Intuitive and Outsider Art  
   A not-for-profit organization to recognize the work of artists who demonstrate little influence from the mainstream art world, and who instead seem motivated by their unique personal visions.
   http://outsider.art.org/

Inside Out Productions  
   Outsider art created by artists with developmental disabilities.
   http://www.insideoutproductions.com/

Walker, Anthony - Anthony Marble Works  
   A Johns Hopkins operating room nurse uses discarded surgery drill bits, carbide and diamond burs, to carve original works in stone.
   http://www.angelfire.com/md3/brainmarble/

Knickerbocker, Carl  
   Paintings by Carl Knickerbocker a 'suburban primitive' artist from Florida.
   http://www.carlknickerbocker.com/

Made in Prison: Contemporary Art by Incarcerated Men and Women  
   An exhibtion of contemporary drawings, paintings and sculpture by inmates from across the United States.
   http://antioch-college.edu/herndon/html/prison.html