Open sensing: An interactive online tool for environmental data collection, monitoring, analysis, and modelling for custom environmental sensor devices

Open Sensing (OS) is an open-source environmental monitoring and analysis platform addressing the critical need for accessible, granular environmental data in vulnerable communities. As urbanization accelerates globally, existing monitoring systems remain prohibitively expensive and technically complex. OS combines cost-effective, self-powered sensor networks with intuitive web-based visualization and spatial analysis tools. The platform enables non-technical users to collect, analyse, and model environmental data through customizable interfaces. The software was developed through a single-page architecture, which allows users to deploy the application without a dedicated backend server, while still providing API server functionality for data upload, data download, and data analysis. Deployed across multiple cities, OS has supported urban farm impact assessment, air quality advocacy, and environmental education. By democratizing environmental monitoring, OS empowers communities to understand and communicate environmental health impacts for evidence-based policy decisions.