Atla Open Press publishes open access works on subjects at the intersection of librarianship and religious and theological studies that potentially impact libraries. Atla's open monograph program launched in 2014 utilizing PKP's Open Monograph Press (OMP) software as primarily a storefront for hosting and accessing book files and later integrated OMP backend functionality into its editorial workflow. In 2018, as a pilot project, Atla incorporated Editoria, a new open source book editing and export program into its workflow. This session will include a discussion of how we identified efficiencies, pain points, and opportunities for improvement as well as share what it is like working as part of a healthy open source community.