The VLC Media Player is an all-rounder. It plays just about any video & audio format there is, streams and converts media from one format to another. It is cross-platform, meaning it is available for not only different Windows versions, but for Linux, Mac & other platforms. Best of all, it is free.
This is how the official site describes it:
VLC is a free and open source cross-platform multimedia player and framework that plays most multimedia files as well as DVD, Audio CD, VCD and various streaming protocols.
Opera web browser from http://www.opera.com/, compared to Internet explorer and Mozilla Firefox is not known to many internet users, although it has been there for quite a while and has often pioneered features other browsers have subsequently adapted.
It has always been one of the fastest and safest browsers around. Its features include:
From now on, we'll be talking about some free software that you might consider having on your PC. There are lots of free programs around that do various tasks as well or nearly as well as their paid counterparts. So check this corner now and then, or come and recommend something you have found.