Hi I would like to recommend the following programs,
Tianguang Software Studio
Open ++. Could not live without this, can register dll's set up programs to open on the context menu. Very useful indeed.
Universal Viewer Universal Viewer — Open many file types: DOCX, XLSX, PDF and more
Throw all kinds of files at the feeware version of this program. Be careful to uncheck the tool bars on install.
Sage thumbs sagethumbs - A Windows Explorer extension allowing to preview many image formats - Google Project Hosting
Another very useful freeware viewer program.
PlacesBar Editor | Melloware
All those windows dialogue boxes that point to places you never use? Change them with this program.