Norton Utilities is a well-known and very classic PC utilities software for DOS and Windows, developed by Peter Norton in 1982 (later sold to Symantec Corporation). It integrates disk editing, disk diagnosis and repair, system optimization, system performance testing, virus detection and removal and many other functions in one place, can help users quickly and intelligently optimize the system, so as to improve user computer performance.

TuneUp Utilities was originally a heavyweight, humanized and easy-to-use system cleaning, optimizing, repairing & maintaining utility (software suite) for Windows with a long history of development (started in 1997) from Germany. After acquired by AVG Technologies (formerly Grisoft from Czech Republic) from Netherlands in 2011, it was renamed to AVG PC TuneUp (now AVG TuneUp).

Glary Utilities PRO is a very popular and powerful one-stop necessary system tools set, provides almost all the functions related to system clean up & repair, optimize & improve, privacy & security, file management and system backup & restore.