CNET Editors' review
Recover a little Windows Registry space with this simple, yet effective, freeware compactor. NT Registry Optimizer's interface couldn't be easier to use; you either click OK to start the process or Cancel to stop it. During the optimization process, NTREGOPT displays the name of the hive being optimized and shows a bar that loosely reports the percentage left to complete.
Our testers found NTREGOPT fast without taking too much of the system's CPU resources. However, it ran best when all other programs were closed. It doesn't make any changes to Windows Registry entries, but is merely rebuilding the hives to eliminate dead space. After the program completes the optimization process, it displays the old and new sizes of the Registry. The percentage of space recovered varies greatly from system to system, but most test systems saved at least 5 percent. You must reboot your system to complete the process.
NTREGOPT fails with a safe error message if you attempt to optimize a second time without the reboot. The program is effective, efficient, and simple to run. Anyone comfortable editing the Windows Registry will find this Hive compactor a useful tool.
Publisher's Description
From Lars Hederer:
Optimize the registry in Windows system. Whenever you need to remove some garbage information or undeleted entries from various installations the program is the tool to do the job fast and easy.
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All versions:
3.8 starsout of 13 votes
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Current version:
3.8 starsout of 13 votes
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My rating:
Write review
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"6+ years of reliable performance"
Version: NTREGOPT 1.1j
Pros
Free, fast, easy to use, very stable in Windows XP.
Cons
Lack of post XP support
Summary
Used this app for years and is the most stable way to compact the registry that I have found, never had a problem after 100's of times running this and the performance on my XP box has always been as good as new.
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"Killed my pc"
Version: NTREGOPT 1.1j
Pros
The first time I used it I saw an impressive increase in my computer's performance.
Cons
The second time I used it, NTREGOPT corrupted my registry and it took me a few days to repair it.
Summary
Efficient but dangerous
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"does a good job"
Version: NTREGOPT 1.1j
Pros
like the way it organises the registry. Speeds up my system for short time.
Cons
boost it gives does not last past a few hours.
Summary
easy to use
still one of the best programmes I can find which are free to use.
Updated on Feb 13, 2011 -
"Awesome software"
Version: NTREGOPT 1.1j
Pros
Very small program, Easy to use. One click and its done
Cons
None that i am aware of
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"WARNING !!!!!"
Version: NTREGOPT 1.1j
Pros
WARNING !!!!!
Cons
WARNING !!!!!
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"Not sure what it did."
Version: NTREGOPT 1.1j
Pros
The program is small and executed quickly.
Cons
Will someone, CNET Editors perhaps, explain what is the difference between compacting and compressing. If they mean the same thing, I sure hell don't want my registry files to be compressed. As far as I know, compression means the compressed files have to be 'uncompressed' in order for the O/S to read it and it actually slows down the process. If this is the case, how does one undo what this little program did? Another downside is, this program has not been developed since 2005. Is this as good as it gets?
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"Excellent"
Version: NTREGOPT 1.1j
Pros
I highly recommend this if you have a tendency to tweak with your system and/or like installing and uninstalling software.
Cons
I wouldn't really recommend this for novices, as one should always be careful with the registry, but instead Auslogics Registry Defrag.
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"Does boost performance."
Version: NTREGOPT 1.1j
Pros
This program is very simple and easy to use. When I opened NTREGOPT it has a small window, that says welcome this program optimizes the registry files of your windows.
Next I click ok to start the process then it will optimize the registry. Now another window appears with the results of my computer. Registry optimization is complete, current registry size 28,872,704 bytes reduced to 28,041,216 bytes, which is a 3% reduction.
Cons
Does require computer to be restarted to activate the optimized registry.
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"This program seems to do a good job"
Version: NTREGOPT 1.1j
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"One click registry Optmizer."
Version: NTREGOPT 1.1j
Pros
Its reasonably fast & the result takes effect after re-booting.
Cons
I cant test if there is any advantage in using this tool.

