Open3DQSAR (Open Source 3D Quantitative Structure-Activity Relationship) is an open-source software tool designed for 3D QSAR (Quantitative Structure-Activity Relationship) studies. QSAR is a widely used computational method in medicinal chemistry that aims to predict the biological activity of small molecules based on their 3D structure. Open3DQSAR provides a user-friendly interface for researchers to perform 3D QSAR analysis, which can accelerate the discovery of new drugs and other biologically active compounds.