Vizzuality went from a data communications consulting company to the creator of one of today's most popular online mapping frameworks, CartoDB. Four years ago, we recognized a major problem in open source geospatial tools, they were still prohibitively difficult to use to creating dynamic, interactive, and beautiful online maps. That was when we decided to build CartoDB, a mix of existing open source software such as PostGIS and our own new code. Each account on CartoDB represents a new PostGIS enabled database, a new user of libraries such as Leaflet, and we hope, a long-time supporter of open source. In this talk, I'll present on how we are building a new and quickly growing community around open source geospatial. I'll talk about our plans for the future and how we plan to support open source for many years to come.