In this article I present some of the best software of maintenance of any computer system, consists of the Piriform line and its products as the are the CCleaner, Recuva, Speccy and Dfraggler. CCleaner: Serves to optimize the computer by cleaning of the registry, trash emptying of recycling, cleaning of the history files, temporary files, management of programs that run when you start your system, uninstall programs. Recuva: A very efficient tool in the recovery of files dnados or deleted accidentally, as well as information or protection to files back. Defraggler: An application to the defragmentation of your hard disk (HD), discusses if necessary, sends fragmented how this information the disc in a percentage and the amount of space in GB that is fragmented, with options to select areas and files to defragment, fragmentation fast or normal, and an estimated time of completion. Speccy: Very effective when looking for information on the computer since it gives you all the technical data as well as name, brand computer, model, type, serial number of the motherboard and other components of the computer as the monitor, processor, hard drive, ram and ahsta a list of the programs that you have installed on the system with the manufacturer and the company name.