To the best my knowledge none of these is any kind of malware.
TextPad is a powerful, general purpose editor for plain text files. Easy to use, with all the features a power user requires.
SpaceMonger is a tool for keeping track of the free space on your computer. Each file or folder on a given drive is displayed in a box in the main window whose size is a relative comparison to all the other files in your system.
Thunderbird makes emailing safer, faster, and easier than ever before with the industry’s best implementations of features such as intelligent spam filters, built-in RSS reader, quick search, and much more.
DeskPins can be used to make any application topmost, that is, to keep it above all other windows. Just grab a pin from the DeskPins icon in the system notification area (a.k.a. taskbar tray) and click on any window. This functionality is identical to the “Always on Top” setting found in some programs. With DeskPins you can add this feature to any program!
Also visit this site for more free utilities.