[Koha] Katipo/Koha Relationship With Greenstone Question

[gsl]

http://www.greenstone.org/

Is there any relationship between Koha, with particular reference to 
Katipo Communications or other current NZ developers, and Greenstone?

Would Greenstone and Koha be seen as having competing (presumably on 
friendly terms) or complimentary interests?

Greg

Greg Lawson
Rolling Hills Consolidated Library
1912 N. Belt Highway
St. Joseph, MO  64506