- 7-Zip [http://7zip.com/] — Free, open source program for opening zip, rar, 7z, gzip, etc files.
- Alternatiff – The plug in for Internet Explorer/Firefox which allows you to view patent images from the Patent Office’s website [http://www.alternatiff.com]
- CrapCleaner- A program that you run occasionally and the computer will through and delete temp files and junk and files without dates [http://www.ccleaner.com/]
- Irfanview – An excellent free image editing software perfect for touching up trademark drawings, screen captures, etc. [http://www.irfanview.com/]
- PDFCreator. If you don’t have “Print to PDF” as an option on your computer, try PDFCreator (free): [http://www.pdfforge.org/products/pdfcreator].
- Google Browser Sync for Firefox. “An extension that continuously synchronizes your browser settings – including bookmarks, history, persistent cookies, and saved passwords – across your computers. It also allows you to restore open tabs and windows across different machines and browser sessions.” [http://www.google.com/tools/firefox/browsersync/]
- Auslogic Disk Degragmenter. Free. [http://www.auslogics.com/disk-defrag/]
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If you like those programs you will probably like the Open Source Alternative Website: http://www.osalt.com
It’s a great site that compiles a list of free open source software that competes with a particular commercial product.
Most of the programs you mentioned can be found there.