CCleaner is one of the world's most widely used software tools for PC optimization, having been downloaded more than 1 billion times to date. The patent confirms CCleaner as a unique solution, with ...

Why it matters: Are you using the free version of CCleaner? If so, you'll probably notice that Windows Defender is now flagging the junk file remover as a Potentially Unwanted Application (PUA) after ...

The company behind CCleaner is Piriform. It’s a British software company and a subsidiary of Avast, the Czech cybersecurity software giant. Piriform was an independent, privately-owned company for ...

Piriform has released CCleaner v5.55 today, which for Professional users now includes a Software Updater feature that will check if installed 3rd party applications are running the latest version.