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People may feel CAD software is very expensive and hence they cannot afford it. The introduction of  CAD freeware  solves this problem. Nowadays many websites offer freeware and an increasing number of people are relying on this. Freeware can be directly downloaded from the internet. They also provide tutorials regarding designing and drafting. CAD freeware offer the features essential to create technical drawings, design, and diagrams. Even though there are some features it has limitations also. Most of the freeware do not give the complete version. Moreover freeware may contain spy ware, trojans, backdoors etc so we must be aware of the threats and know how to avoid them.