These are the TU Delft Guidelines on Research Software accompanying the "TU Delft Research Software Policy" (http://doi.org/10.5281/zenodo.4629662). The policy sets out the high-level requirements for how software should be managed; the responsibilities of the different stakeholders involved in software development and describes the global workflows for sharing software openly at TU Delft. These guidelines are the ‘how-to’ comply with the policy and they go into more detail on the prescribed workflow for sharing software either under an open or proprietary licence, providing more background and considerations, additional definitions and references.