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|Private limited company|
|Founded||London, UK (2004)|
|Headquarters||One Euston Square, 40 Melton Street, London, United Kingdom, NW1 2FD|
|Guy Saner (CEO)|
It develops cleaning and optimisation software for Microsoft Windows and Mac OS X operating systems, plus Android mobiles. Piriform's projects include CCleaner, Recuva, Speccy, CCleaner Cloud and Defraggler, a disk defragmentation tool. On 22 September 2015, Piriform launched CCleaner Cloud, which uses the CCleaner technology to maintain PCs remotely.
Piriform's most popular application, CCleaner, has been downloaded over 1.5 billion times. It is one of the oldest system cleaners, first launched back in 2005. CCleaner is synonymous with system cleaning, just like Google is synonymous with search.
As of January 2014, it has been the most popular software on FileHippo for more than a year, and also has a 5-star editor's rating on Softpedia. CCleaner has been reviewed by Chip.de, TechRadar, PC Magazine, TechRepublic
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