Prettify 7-Zip

7-zip is a great, free and open source archive utility for Windows. It comes in x86 and x64 flavors with GUI and command-line interface and supports a ton of archive formats.

• Packing / unpacking: 7z, ZIP, GZIP, BZIP2 and TAR
• Unpacking only: ARJ, CAB, CHM, CPIO, DEB, DMG, HFS, ISO, LZH, LZMA, MSI, NSIS, RAR, RPM, UDF, WIM, XAR and Z.

Unfortunately, the GUI is not the prettiest and the associated file icons are 32×32 and 16×16 8 and 4 –bit color. Extremely, way retro.

There is a nifty theme manager for 7-zip that scripts Resourcer to replace the icons embedded in the 7-zip executable with new icons of your choice.

There are a ton of filetype and toolbar icon sets in 7-zip Theme Manager but the most complete and consistent pairing is the "Tango 2" toolbar icons with the "Tango 1" filetype icons from the Tango project.

Here’s what the Tango-ized 7-Zip looks like.