Portable Apps For Chess
I have found a website that is of interest to chessplayers since it contains a long list of free programs, some of which are very helpful to us. URL is http://portableapps.com/download
Some of the revelant programs are:
Lucas Chess--An excellent swiss knife training program. You can play against the computer with hints and takebacks and you can have the built in engines analyze your games. Also you can play solitaire chess or just view PGN files.
Utorrent is available for downloading chess programs, books and videos. Also Foxit reader is listed for reading PDF files containing chess books and WinDJview for viewing DJVU files that also contain books.
Many other programs are also available--both chess related and generally useful ones. They are all available on the PotableApps.com Platform that makes them easy to download and use.