TreeSize Free previously reviewed on RGdot is at version 3.2.1 now. Personal and professional editions add extra features like scanning network drives and more detailed reports and analysis. There is even a windows mobile version.
TextCrawler also previously reviewed is at version 3.0.2 with a professional version for commercial use available.
The very useful FastStone Image Viewer is at version 5.3 with recent additions like copying and pasting objects in its draw board.
The Java based ImageJ (v.1.48) is a good option for image editing with macro and plugin support that extend its features to advanced levels.