Open Source Internet Research Tool (OSIRT) is a free and open source software tool that enables law enforcement officials to conduct online research and obtain artefacts in an evidential and lawful manner. Over the past three years, OSIRT has seen growth from a handful of users within UK law enforcement, to a reach that extends to countries across the globe which also sees usage outside of law enforcement and beyond its original scope.This paper will reflect upon OSIRT’s development, and discusses issues surrounding the development of a FLOSS product for UK law enforcement. With cuts to budgets being made to law enforcement services, FLOSS software like OSIRT has an opportunity to flourish in this sector. To establish OSIRT’s and FLOSS’ integration into UK law enforcement, interviews, a small case study and questionnaires were conducted with serving police officers, police trainers and an IT administrator; all have experience with OSIRT.