We were early adopters of Jupyter notebooks, seeing the value in using them for molecular simulation and so making them a key user interface for BioSimSpace as it was developed from 2017 . We now run an open-access Jupyter notebook server with the latest major version of sire and BioSimSpace installed at . This lets researchers try sire and BioSimSpace in their browsers, without having to install anything. Finally, sire is and always will be an open source software. All 7000+ versions of the source code since its inception in 2005 are online, with releases documented in the changelog . As described and linked to from this changelog, development started on a local subversion repository, before moving to a Google Code subversion space in 2006, then the michellab GitHub Organisation in 2015, then the OpenBioSim GitHub Organisation in 2023.