7Z also known as 7Zip package tool is available as open source and is full free for use. Big on the size a nude patches (from above 5Mb) on this site are packed by this file archiver.
7Zip is fast, easy in use and free. 7-Zip works in Windows 10 / 8 / 7 / Vista / XP / 2016 / 2012 / 2008 / 2003 / 2000 / NT.
You can download archive unpacker here:
or you can find this tool on its official site below: