GstarCAD is well-known alternative CAD software of high compatibility with ACAD. With 25 years of continuous improvement and lean innovation, today GstarCAD is far ahead in performance, stability and other key indicators and becomes leading CAD software in the world. GstarCAD is based on independent intellectual property rights and patented core technologies owned by Gstarsoft. User interface and operating habits are very similar to ACAD, which is easier to operate and use. Zero training is needed for ACAD users.