System/Registry
freeware
RunScanner
RunScanner is a completely free windows system utility which scans your system for all configured running programs. You can use runscanner to detect autostart programs, spyware, adware, homepage hijackers, unverified drivers and other problems. You can import and export your results and let other people help you to solve your problems.
freeware
Quicksys RegDefrag
Quicksys RegDefrag is a freeware utility to defrag your registry. It optimizes registry by removing gaps, fragments and wasted space in Windows registry files. The defragmentation improves performance and boosts access to the registry.
freeware
ProduKey
ProduKey is a small utility that displays the ProductID and the CD-Key of MS-Office, Windows, Exchange Server, and SQL Server installed on your computer. You can view this information for your current running operating system, or for another operating system/computer - by using command-line options. This utility can be useful if you lost the product key of your Windows/Office, and you want to reinstall it on your computer.
freeware
Registry Life
Registry Life is a utility for speeding up the system by fixing the registry errors, compression and defragmentation the registry. Registry cleanup function performs search and repair of a vast number of different registry problems. Unlike other programs, the software performs the registry optimization on system startup. Defragmentation and compression in automatic mode can be performed according to a schedule set by the user.
freeware
Eusing Free Registry Cleaner
Eusing Free Registry Cleaner will scan your Windows registry for invalid or obsolete information and provide a list of the errors found. After fixing the invalid entries, your system will be more stable and run faster. For maximum safety, Eusing Free Registry Cleaner will make a backup of the repaired entries. You will be able to restore any changes made using the software by choosing Restore registry backup.
freeware
RegScanner
RegScanner is a utility that allows you to scan the Registry, find the desired Registry values that match to the specified search criteria, and display them in one list. After finding the Registry values, you can jump to the right value in RegEdit, by double-clicking the desired Registry item.
freeware
Auslogics Registry Cleaner
Auslogics Registry Cleaner is designed for fast and safe Registry optimization. It will detect and fix various Registry errors and ensure that your computer runs as good as new. Windows Registry is a database that stores Microsoft Windows settings and options. It contains all the information and settings for all hardware, operating system software, other software, and user settings.