Cloud CORE is an open source tool that helps you calculate real-time, resource-specific costs in Amazon Web Services (AWS). This video explains how to best use the tool.
Cloud CORE was developed by engineers at Blue Matador.
Links:
Live version: https://tools.bluematador.com/cloud-core/
Github repo: https://github.com/bluematador/cloud-core/
Blue Matador: https://www.bluematador.com/