OpenMap Development Tanzania, Inc. (OMDTZ) is a registered NGO based in Dar es Salaam and operating across Tanzania. Since 2017, OMDTZ has promoted a number of community mapping projects, generated map awareness, actively pledged open data sets and continued to build a network of enthusiastic mappers in Tanzania. Similar to the Humanitarian OpenStreetMap Team, all activities are set up around the global OpenStreetMap (OSM) project, which is both a map and database of geographic data owned by the contributors themselves: anyone is able to view, create and use this information for free. OMDTZ staff have been heavily involved in the success of community mapping projects in Tanzania through engaging and training community members to, for instance, map the flood prone areas of Dar es Salaam for flood resilience purposes (i.e. Ramani Huria 1.0) and mapping the Bukoba region to strengthen response and preparedness to disasters in this earthquake affected area.We also involve people with different backgrounds ranging form technology, social, economy, political, academia and community members who are the center of our operations.