OS synthetic biology
While the machines that humans make require a knowledgeable maker with the necessary tools for replication, the machinery of life is inherently able to self-replicate. As humans have come to understand the molecules of life, the information storage capacity, and how this is converted into a tightly choreographed yet chaotic self-perpetuating series of chemical reactions, the forces of life looks less like a mystery and more like a energy that can be harnessed (just as has been done with wind, solar, tidal, geothermal and fossil fuels). The universal code of life (written in DNA->RNA->proteins) is now not only readable but writable. In the same way a computer program can be shared from one machine to another without a cost to the creator and generating more overall wealth, biological programs that provide human utility can be shared to increase wealth and the standard of living of all. Thus OS synthetic biology will be fundamental to achieving post-scarcity.