I don't understand all the fuzz about the "open" part, the licensing, or the price. It's a commercial fork or the Apache licensed Mayan EDMS done with the approval of the Mayan folks.

https://forum.mayan-edms.com/viewtopic.php?f=7&t=64

https://en.wikipedia.org/wiki/Multi-licensing

Apparently not the first paid fork of Mayan EDMS

https://groups.google.com/forum/#!searchin/mayan-edms/paid|s...