Notepad++ is a replacement for Windows’ built in notepad. It supports multiple tabs and syntax highlighting for nearly any language. When it installs, it also adds an entry to the right-click menu for any file that reads “Send to Notepad++.” This is very useful for those of us who do a lot of programming and don’t have all of the file extensions set up yet, or those nosy people who like to see what makes their applications tick.

Make your own PDFs with PDF Creator. Like the full blown Adobe Acrobat, what you’d typically need to use to create PDFs, PDF Creator installs itself as a printer, so it works with any application. When you want to create a PDF simply press print, and then choose PDF creator as your printer. Once you click print a pop up will guide you through the process of adding a title and author to your PDF and then ask you where to save it.
I find it especially useful as a print preview function for applications that don’t have it. Or in Firefox when I want to preview how a selected section of of a web page will print.

ForecastFox puts a highly customizable forecast inside Firefox. You can include up to a 5 day forecast with temperature, precipitation type, wind speed and other information as well as the current conditions including heat index or wind chill and the current radar image for your location. ForecastFox will also pop up severe weather alerts, such as thunderstorm, tornado, or winter weather warnings.