The Kingsoft Free Cloud Antivirus security solution for PC users. Cloud Antivirus defends against viruses, malware, and spyware in real-time. Cloud includes a disk and history cleaner, an LSP, a process supervisor, a set of system repair tools.

Kingsoft Online Antivirus scans and removes viruses, spyware, Trojans, and malware online without any installation. Using cloud technology, KOA protects your pc without slowing down your operations, and is compatible with other security software.

Kingsoft PC Doctor, which focuses on providing computer users excellent privacy cleaner, registry cleaner and, brilliant Windows optimization service, is your best free professional and easy-to-use Windows Diagnosis and Optimization software.