FastStone does most (if not all) of what ACDSee does for free, and there is a portable version.
Of course there are many other free image viewers and editors, but I have found this application to be very similar to ACDSee, except that it is free.
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Plenty of free Tag and rename programs are also available.
The free MP3Tag and the TagScanner are examples.
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Free sticky notes applications are also out there, and most people know how to get them easily.
PNotes and Stickies are just examples. Both are available in portable format.
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Free organizers are available almost everywhere, and there are plenty of Cloud applications for that purpose, all free of charge. Try the sites of Google, Yahoo, Microsoft, etc., or download free applications from SourceForge.