If version 6.2.1.0 does not meet your needs, consider these highly-rated alternatives:

: Designed primarily for older Windows versions (XP, Vista, 7, 8) but can often run on Windows 10/11 in compatibility mode.

: Runs a health check to identify junk files, speed-reducing issues, and causes of application crashes.

: Removes file clutter and web browser traces to free up storage space and protect privacy.

: Historically offered as a trial with limited features, requiring a paid "Pro" license for full optimization capabilities.

: Repairs corrupt or missing registry keys that can cause system instability.