pgRouting, a PostGIS extension containing algorithms and tools for working with graph data, has become a highly flexible member of the FOSS routing engine family. In this talk, it will demonstrated just how flexible it can be by showing how routable networks (called 'topologies' in pgRouting) can be made editable. The presenter will take the audience from theoretical conception of editable topologies (how can edits, insertions and deletions be handled in PostGIS?) through its implementation. In the end, a demonstration of a fully editable topology in a web mapping application based on a real world example using OpenStreetMap data will be show cased.