Navigate to the official Powersim Inc. website ( powersimtech.com ). Look for the or "Free Trial/Student Version" section.
If you see an error saying "License not found," try these fixes: Download Psim Student Version
If you outgrow the Student Version—need larger circuits, advanced analyses, commercial licensing, or integrated PCB workflows—consider evaluation or paid versions of PSpice or alternatives such as LTspice (free with fewer restrictions), NGSpice (open source), or commercial tools like Cadence Spectre or Synopsys HSPICE depending on requirements. Navigate to the official Powersim Inc
: Users gain access to no-cost e-learning courses and community support through the Altair Learning Center . PSIM Academic Hub - Altair NGSpice (open source)