The open source 2GIS API allows all website developers use 2GIS maps in their products for free.
2GIS API provides accurate and up-to-date maps for your website. It’s built upon Leaflet, which is the lightest, the most performing and the most intuitive library that we know. 2GIS API works seamlessly on phones and tablets.
You can create a map widget or a floor plan widget if there’s a floor plan for the building in 2GIS.