Bender 3D Editor (being used by Hollywood movie makers):
https://www.blender.org/
FastStone Image Viewer (image viewer, bunch image processor):
http://www.faststone.org/
VMware Workstation Player (virtual machine to run any OS under Windows/Linux w/o installation):
https://my.vmware.com/en/web/vmware/...on_player/12_0
NetBeans IDE (super-duper IDE for Java, JavaScript, HTML5, PHP, C/C++ and more):
https://netbeans.org/downloads/
Unity (a very powerful 2D and 3D game development environment all-in-one):
https://unity.com/