PyBossa

PyBossa (http://docs.pybossa.com/en/latest/index.html) - PyBossa is an open source platform for crowd-sourcing online (volunteer) assistance to perform tasks that require human cognition, knowledge or intelligence (e.g. image classification, transcription, information location etc).

BOSSA - http://boinc.berkeley.edu/trac/wiki/BossaIntro. Bossa site refers to Open Source Mechanical Turk - http://boinc.berkeley.edu/trac/wiki/BossaOverview