Cities: Skylines - Cities: Skylines is a Construction and Management, City Building, and Single-player Simulation developed by Colossal Order and published by Paradox Interactive.
Openki - Platform where you can search, propose, take part, help organize or publish workshops, lectures...
SimCity BuildIt - Build, craft, and control! SimCity BuildIt is an all-new SimCity game designed just for mobile.
Citybound - Open-source city building sim with a focus on realism through microscopic details
Micropolis - Micropolis is the open source version of SimCity Classic from Maxis, developed by Will Wright and Don Hopkins.
Mobilizon - A free and federated tool to get our events off Facebook