Security software giant Avast has acquired Piriform, the U.K.-based company behind CCleaner -- one of the most popular system cleaners on desktop and mobile. Founded out of London in 2004, Piriform is ...

Avast, today's largest vendor of security software, has acquired Piriform, a UK-based company that is behind many successful desktop and mobile apps, such as CCleaner, Recuva, Speccy, and Defraggler.

Software company Piriform may not be a household name, but the company has been offering a handful of popular, powerful, and free apps for Windows computers for years. Piriform is the developer behind ...

REDWOOD CITY, California--(BUSINESS WIRE)--Avast, the global leader in digital security products, today announced that it has acquired Piriform, the leading provider of device performance optimization ...