7-Zip is an Open Source product that You may use for private or commercial use for free. 7-Zip is really my favorite archive tool! It does everything that can WinZip or WinRar - most popular commercial zip utilities. And even more - it uses it’s own format “7z”, that sometimes has better compression ratio.
There are main features of 7-Zip:

High [...]

Blender is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback. Available for all major operating systems under the GNU General Public License. Blender therefore is fully free to use and distribute within any educational, professional or commercial environment. Artwork created with Blender – including python scripts – is the [...]