psm_utils was developed with pragmatism and maintainability in mind. Instead of reinventing the wheel, psm_utils relies on the existing Pyteomics and psims Python packages where possible. Furthermore, psm_utils follows HUPO-PSI community standards where applicable, and is built to be open and dynamic, allowing easy updates and extensions. A permissively licensed open-source software, psm_utils welcomes contributions from the community.