One last word on Movable Type (and Open Source)

Anil Dash, 2007:

As of today, and forever forward, Movable Type is open source.

Daiji Hirata, 2013

Starting with Movable Type 6, registration for the Movable Type Open Source (MTOS) license will end and a new license will be introduced.

Moral of the story? Software owned by a corporate entity is never truly open source.