Build of source from https://github.com/RickP/mongopi
More information can be found at http://markclittle.blogspot.com/2012/12/adventures-in-pi-land-part-one.html and http://markclittle.blogspot.co.uk/2012/12/adventures-in-pi-land-part-two.html
This binary is covered by the existing MongoDB licences, which are included in this repository as well as the source code repository from which it was built.
Note, this is an old build now from the very first series of Pis. May rebuild.