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Hi Praveen,

WinZip is trusted by millions of businesses and consumers to boost productivity, simplify file sharing and keep information private. The world's number one compression and encryption software, WinZip offers apps for all of today's most popular platforms and devices, giving users a better way to exchange files in the cloud, email and social media. WinZip's product line also includes powerful utilities to improve system performance and help keep PCs secure. WinZip is part of the Corel family of companies.

ReviverSoft was founded to provide trusted resources to help you repair, optimize and maintain your computer for optimum performance.
It has various products:

1. Total PC Care: Get full access to all of ReviverSoft’s powerful yet easy to use products in one convenient, affordable subscription. Enjoy unlimited updates, upgrades, technical support, free resources and much more. Total PC Care can look after all your computer's needs, helping you save time and money. The best investment to keep your computer going for years.
2. PC Reviver is a multi-purpose utility that will diagnose and repair errors on your PC, and provide other maintenance and optimization recommendations. PC Reviver can repair the errors found and perform the optimization and maintenance tasks to restore optimum performance and stability to your PC.
3. InstallSafe will scan your PC to check for unwanted browser toolbars. InstallSafe monitors the installation of any application and tells you if other applications have been installed at the same time. It also tells you if the installation made changes to your browser settings. If anything unwanted is detected, InstallSafe allows you to revert these changes quickly and easily.
4. Security Reviver will scan your PC and identify security threats and other vulnerabilities. Security Reviver can quickly and safely remove these threats, prevent them from reoccurring and keep you protected.
5. Privacy Reviver will scan your PC and identify any personal information or activities that are at the risk of being exposed to hackers and scammers. Privacy Reviver can safely remove all these traces and keep your information private and secured in minutes.
6. Registry Reviver will scan your Windows registry for problems. Registry Reviver can repair, maintain and optimize your registry to restore optimum efficiency and effectiveness to it, and to your PC.
7 Driver Reviver will scan your PC to identify out of date and obsolete drivers. Driver Reviver can quickly and easily update these drivers to restore optimum performance to your PC and its hardware.
8. Disk Reviver includes all the tools you need to safely repair, optimize and maintain your hard disk drive. Disk Reviver can help restore optimum PC performance and stability, free up valuable disk space for more storage and monitor the health of your hard drive.
9. Start Menu Reviver is the only Windows Start Menu utility to revive the Microsoft Windows Start menu, not just replace it. Start Menu Reviver restores the traditional launch pad functionality that is obviously missing in Windows 8 AND fully complements Microsoft’s new Windows operating system vision by being touch screen friendly.
10. Battery Optimizer will scan your laptop and determine how to get more life from your laptop battery. Battery Optimizer will provide recommended actions to perform, along with the estimated time-savings you will receive.
11. MacReviver includes all of the essential tools to help you clean, optimize and maintain your apple computer to restore its performance and stability. It also includes a bonus Anti-theft protection feature that gives you an added layer of security against the theft of your Mac.
12. PC Benchmark will scan your computer to determine if it is performing at its maximum potential. It will also allow you to compare your computer against others who have run the application. PC Benchmark will provide recommendations on how to achieve optimum performance, along with instructional videos and articles on how to complete the recommended actions.
13. iPhone Battery Optimizer will give you an accurate reading on how long you have left on your current battery charge, along with useful recommendations on how to optimize your phone’s battery life.

In September 2014, Corel acquired ReviverSoft's useful and informative range of Windows and Mac utility software and resources. To learn more about Corel, please visit www.corel.com.

Therefore, they are both the same product from the Corel company but are different software's all together.

Regards,
Lokesh