Introducing Felt, a new map sharing and collaboration product. We connect closely with the current ecosystem of open source mapping tools and make it easier to work together with colleagues inside and outside mapping. In this talk, we will show: - How current users of programs like QGIS bring Felt into their workflows - Where Felt lets them expand into new areas like community feedback - How we’ve used and expanded core OSS libraries like MapLibre, GDAL, Pelias, and Tippecanoe - Why we’re pushing forward emerging formats and standards like PMTiles Session attendees will gain an important new tool for their stack, a product made for extending the reach of existing open source mapping tools and improving collaborative map-making beyond analysis.