įreemium for home use commercial for use in organisations and institutions ĬCleaner ( / ˈ s iː k l iː n ər/, originally Crap Cleaner), developed by Piriform (a company acquired by Avast in 2017), is a utility used to clean potentially unwanted files and invalid Windows Registry entries from a computer. Albanian, Arabic, Armenian, Azeri (Latin), Belarusian, Bosnian, Brazilian Portuguese (Portugues do Brasil), Bulgarian, Burmese, Catalan (Catala), Chinese (Simplified), Chinese (Traditional), Corsican, Croatian (Hrvatski), Czech (Ceský), Danish, Dutch (Nederlands), English, Estonian (Eesti keel), Farsi, Finnish (Suomi), French (Français), Galician, Georgian, German (Deutsch), Greek, Hebrew, Hindi, Hungarian (Magyar), Indonesian, Italian (Italiano), Japanese, Kazakh, Korean, Kurdish, Latvian, Lithuanian (Lietuviu), Macedonian, Malaysian, Marathi, Mongolian, Norwegian, Polish (Polski), Portuguese (Portugues), Romanian (Romana), Russian, Serbian (Cyrillic), Serbian (Latin), Slovak, Slovenian, Spanish (Espanol), Swedish (Svenska), Tatar, Thai, Turkish (Türkçe), Turkmen, Ukrainian, Vietnamese.