Best Archive Manager for Windows

I no longer support using IZarc. 
For a very long time, I used IZarc for archives of all sorts. Unfortunately, they have made some interesting choices to fund their developments by including adware bundled with their software. You can opt out of these during the installer, but the amount of trickery in doing so exceeds the benefits of the program. 
I now suggest 7-Zip as a do-all, end-all to most archive formats. 

See my new review for 7-Zip here:
https://zylblog.com/2014/06/7-zip/

What is the best free archive manager for Windows?

With so many archive managers available for Windows, and so many that are either trial or possibly contain viruses, it’s hard to find a descent one.

By far, the best one I have ever used is IZArc, It supports many different archive formats.
Filehippo lists a few in it’s description:

“IZArc is a freeware archive utility supporting many archive formats like: 7-ZIP, A, ACE, ARC, ARJ, B64, BH, BIN, BZ2, BZA, C2D, CAB, CDI, CPIO, DEB, ENC, GCA, GZ, GZA, HA, IMG, ISO, JAR, LHA, LIB, LZH, MDF, MBF, MIM, NRG, PAK, PDI, PK3, RAR, RPM, TAR, TAZ, TBZ, TGZ, TZ, UUE, WAR, XXE, YZ1, Z, ZIP, ZOO.“

Download IZArc for Windows here:
http://filehippo.com/download_izarc/

IZArc is Freeware, and completely advertisement free (a wonderful thing).

IZArc is somewhat actively under development, and has no outstanding bugs that will widely affect its performance.

“One of the best I have used by far. I install it on most of my client’s computers as well and they all enjoy it. It’s small enough to download over low-grade DSL, and installs very quickly.“ – User