Registry Cleaner that works well with Windows 7 Pro 64 bit OS

We write software for Banks and Credit Unions, which relate to electronic document handling (not relevant to registry cleaning but sets the stage for my info). In delivery of our software we work closely with Financial Institutions IT Departments in production environments.

With some regularity, over the past 6 years, we have have used CCleaner to overcome OS issues caused by the Registry not being handled correctly by installers/uninstallers.

Just as an interesting note: CCleaner used to be called "Cr@p Cleaner" but it was changed some years ago.

Our use of CCleaner has been to show IT Departments that the issues with running our software were related to the condition of their systems and not our software. In one very notable case we ran CCleaner with all it's options enabled, on a teller line PC that was failing to start our software. CCleaner removed almost 700 registry entries and nearly 2GB of junk files. More than 400 of the registry entries were related to Novel and when the Credit Union made the move from a Novel to a straight Windows network.

 Once that PC was rebooted and our software was installed, our software ran exactly as designed. The IT person we were working with was so impressed that he ran it on his work PC and reported to us that it removed 1600 registry entries and substantially improved how it was working.

I'm referring to CCleaner, here, but that is only because we use it and I'm familiar with it. There are certainly other good products out there both in the freeware and paid for varieties. Some of the others may provide more or better functionality but I can't speak to that.

For those posting here that are sticking to the "never touch your registry" or "no one should every use a registry cleaning tool", well each to their own. Our company has found that these tools are not fakes and have proven to be very useful to us and to our clients who we need our own products to work well for.