<p>➀ CircuitMaker is a free PCB design tool offering professional features like 16-layer support, 3D visualization, and collaborative cloud-based workflows, powered by Altium's engine;</p><p>➁ The 2.3.0 update introduced KiCAD/P-CAD import, Nexar API component search, and integration with Autodesk Fusion 360 via Altium CoDesigner;</p><p>➂ While praised for accessibility and community focus, it lacks local file storage and has limited compatibility with non-Altium formats.</p>