Monkeybrains is a local internet service provider that offers high-speed wireless connections using rooftop point-to-point WiFi equipment. Their first office was in the warehouse at 3rd Street & Marin in 1998 - you can still see a large mural on the building!  One night, a resident painted it with old house paint that was sitting around the warehouse. Currently, their SF shop is on 12th Street and Folsom and has several murals.

Murals Commissioned by Monkeybrains at 286 12th StOld Chocolate Factory Mural at 286 12th St1990s Monkeybrains sign at 3rd & Marin
 

MonkeyBrains provides free Internet to many Public Housing in the San Francisco.  They have some racks in 200 Paul.

Big Check For Internet to Public Housing

• Internet Service Providers