The rapid advancement of 3D printing technology has revolutionized the biomedical field, enabling the design and fabrication of both off-the-shelf and patient-specific biomedical devices with enhanced biomechanical performance. This chapter provides a comprehensive overview of the software tools essential for the 3D printing workflow in biomedical applications, covering medical imaging, data acquisition, segmentation, computer-aided design (CAD), lattice integration, finite element analysis (FEA), support generation, printing simulation, and slicing. By integrating these specialized software solutions, researchers and clinicians can optimize implant design, improve surgical outcomes, and accelerate innovation in patient care. The chapter highlights the capabilities and advantages of commercial and open-source software platforms, offering insights into their roles in facilitating accurate anatomical modelling, structural optimization, and manufacturing efficiency.