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The key step for this purpose is the calculation of collision cross\u2010section for the theoretical models. Multiple methodologies have been established, including the projected superposition approximation (PSA) method. In this study, we introduce PSA\u2010GUI, a cross\u2010platform scientific\u2010software implementation of the established PSA method that uses the Windows Subsystem for Linux (WSL) to enable execution on Windows systems. PSA\u2010GUI integrates PSA parameter control, automated PDB and XYZ file handling, multimodel conformer extraction, resource\u2010aware batch execution, and real\u2010time job monitoring into a workflow for individual structures and conformational ensembles, thereby facilitating its use in structural\u2010biology applications.<\/jats:p>","DOI":"10.1002\/jms.70116","type":"journal-article","created":{"date-parts":[[2026,9,28]],"date-time":"2026-09-28T07:11:11Z","timestamp":1790579471000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["PSA\u2010GUI: A Windows\u2010Based Graphical User Interface for the Projected Superposition Approximation Collision Cross\u2010Section Calculation"],"prefix":"10.1002","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8671-6293","authenticated-orcid":false,"given":"Farhad","family":"Zahedi","sequence":"first","affiliation":[{"name":"Department of Chemistry and 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