See Scripto:
http://scripto.org/ <http://scripto.org/> and
https://github.com/chnm/Scripto
<https://github.com/chnm/Scripto>
(where it gives the license as GPL 3)
and From The Page
http://manuscripttranscription.blogspot.com/
<http://manuscripttranscription.blogspot.com/>
(under AGPL)
and see this post:
http://scripto.org/?p=77
<http://scripto.org/?p=77>
about crowdsourcing technologies.