Part one of a huge list of free software. Now, you don’t need to buy any application.
Free 3D Graphics

3Delight: Fast, high quality, compliant renderer designed to produce photo-realistic images in demanding production environments.
Anim8or: 3D modeling and character animation program.
Blender: free open source 3D content creation suite, available for all major operating systems […]

This is a simple method to see if your antivirus is working properly.
1- Open your Notepad.
2- Paste this line X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
3- Save the file as virus.exe
If are all good, the antivirus must detect this test.
Enjoy