Diig.io is a lightweight tool for extractive transparency. The Engine Room and the Namibian Institute for Public Policy Research built together a data model and searchable platform of petroleum exploration licenses in Namibia to power investigation and advocacy. From that experience, The Engine Room realized that the underlying data model and code can be useful for other organisations facing similar challenges — with the proper support. Through the replication sprint process, we built two new platforms with Citizens for Justice and Oxfam in Malawi and the Zimbabwe Environmental Law Association, targeting mineral extraction in their countries.