Stable is a rather new cafe in the Mission. I've enjoy this place plenty. My favorite part is the view from their upstairs area, the messenger service nextdoor (godspeed) and the use of the local De La Paz coffee (also located in the Mission). The atmosphere is super chill, I have yet to see a laptop and the staff is always very nice.
STABLE CAFE 2128 Folsom Street M-F 8-3, Sat 9-3. /No website yet, but more info here