OpenOffice.org is a collection of applications that work together closely to provide the features expected from a modern office suite. Many of the components are designed to mirror those available in Microsoft Office but it1s Free at all.

Rename all your files, folders and shortcuts, with all shapes and options you will ever need. You can numerate files sequentially, batch rename, replace strings, modify strings, change dates, modify file's attributes, etc. Drag and drop all files and folders from explorer to it's window, has full, 'infinite undo' function - so you will always be safe, and you can also create your own more elaborated scripts, adding every kind of available option together, for repetitive and more complex renaming actions.

Make a list of all the tasks you have To Do and remember, mark them done, archive tasks for future reference, define item priorities, alarms and... it is so small that won't take much space in your desktop!