Free software that allows you to defragment individual files or entire folders quickly and efficiently.
Software that allows preventing your computer's hard disk from entering sleep mode.
Software that allows you to remove passwords and restrictions from PDF files.

Small utility that allows you to split files into parts.
Utility that allows you to find the files that occupy most of the hard disk.
Software that allows for the complete and permanent removal of already deleted files, preventing any possibility of future recovery.