VLC is the all-round best media player. VLC will play almost any media file you through at it. Whats also great about VLC is that it works on almost all the platforms, so android, IOS, Windows, IOX and Linux.
CCleaner cleans out registry files so that your computer can be faster again.
Adobe Reader is the most commonly used PDF reader, so you can’t go wrong with it. It has a lot of updates but you can just download the latest one and skip any further updates.