Ostrzółka is an open-source, crowdsourced digital archive and bibliography dedicated to the city of Bydgoszcz. The project aims to map the DNA of the city by indexing historical and contemporary addresses, buildings, organizations, and the people who shaped them.
By bridging the gap between raw data and historical sources, Ostrzółka provides a centralized platform for enthusiasts, historians, academics and citizens to document Bydgoszcz's urban evolution.