Here are a number of OS X tools that are highly recommended. They help over technical obstacles or poor usability of OS X. Most of them are available for small prices.
RightFont: Font manager and free fonts
PopChar: Quickly find special characters
JumpCut: Clipboard extension (free)
TextSniper: extract text from the screen
Better Finder Rename: Rename files batchwise
Bean: Lightweight RTF editor and text capture without distractions
Surely there are comparable tools on Windows…