Our aim is to take the best that we know and think about premodern civilizations and to make it available to anyone with access to the internet by way of a phone, a tablet, or a computer, at home, in a library, in a park, or on a bus. As our data will be free and open for all to use and engage with, so also must our interpretations of it be free and open, and so also the software that we create for accessing it and analyzing it must be free and open.