FileSee 

FileSee is a powerful All-In-One file viewer. It is a mixtinite of Text viewer, image viewer, flash player, mp3 player, midi player, hex editor, html viewer, rm player and Zip decompresser.
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Compress (adware) 

Compress will compress document files up to 99% and delete unneeded files (such as temp files). When the file is compressed, it will still launch with the same view it launched with before it was compressed. Compress is a free and powerful solution!
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