Most of the time, Source code packed for download as a TAR (Tape Archive) file. It is a standard format in the Unix/Linux world. These files have a .tar extension; they can also be compressed, the extension is .tar.gz or .tar.bz2 in these cases. It's time for 7-Zip
Here you can install 7-Zip, which has a nice graphical user interface. 7-Zip can also be used to unpack many other formats and to create tar files.
Download and install 7-Zip from 7-zip.org. If you do not want to use 7-Zip as a command line tool, skip the next steps.
Add the directory you installed 7-Zip into to your path (Start -> Control Panel -> System -> Advanced -> Environment Variables).
Move the tar file to the directory you wish to unpack into (usually the tar file will put everything into a directory inside this directory).
Open a command prompt, and cd to the directory.
If the tar file is compressed, type 7z x filename.tar.gz at the command prompt (where filename.tar.gz is the name of the compressed tar file). This results in a tar file called filename.tar
Type 7z x filename.tar at the command prompt (where filename.tar is the name of the tar file).
Instead of using 7-Zip on the command line, you can use the file manager and click on a .tar, .tar.gz, or.tar.bz2 file; 7-Zip will automatically start.
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