NEW! O&O Defrag 25 Pro! Optimization and Health Check for all Disks!

With O&O Defrag 25, we have added to system optimization notifications on your PC’s health.

Our new O&O Defrag 25 Pro is now available!

Do you enjoy cleaning up? Or would you prefer to have it done by professionals? Whatever you prefer, you should definitely let professionals clean up your computer. Only then can you be sure of achieving the best results. That is why we have further improved O&O Defrag for you: The new O&O Defrag 25 is O&O’s best clean-up program yet. Only a professionally tidy and organized hard drive or SSD can be fast – and live even longer.

NEW: S.M.A.R.T. Functionality to let you monitor your PC’s health

In O&O Defrag 25 the S.M.A.R.T. functionality has been integrated for the very first time. This indicates the “health status” of hard disks, SSDs and RAIDs whenever there is any problem. Such a problem could be a high temperature or an error reported by the drive itself. If there is anything unusual going on, a message will be displayed in the Windows Action Center. This functionality notifies users of any problems and gives early warning about any impending crash of a disk. 

NEW: Drive activity display in the Windows taskbar

In the new O&O Defrag version, read and write accesses on the computer will be more visible. Users can see have the read and write operations currently being run on any drive displayed in the taskbar. A search on the respective drive can be started by right-clicking.

The number one cause of slow PCs

The Problem: Every file system is fragmented. This means that over time, files will no longer be filed consecutively but, instead, be scattered across the computer’s entire storage area, slowing down access to these files. This problem doesn’t just apply to hard disks but to SSDs as well. Over the course of time SSDs save file fragments over more memory cells than are necessary. This, in turn, leads to a continuous slowing down of the read and write processes, just as we experience on hard disks.

The Solution: This is where O&O Defrag 25 goes to work with its Install & That’s All feature. O&O Defrag 25 will configure and run all settings automatically, according to the specific requirements of your system. Scattered file fragments will be reconnected and saved in fewer memory cells. This leads to fewer read and write accesses to these memory cells. The result is the hard disk and SSD running faster and their life expectancy increased on account of reduced read and write accesses.

Unique: Install & That’s All

With O&O Defrag 25 Pro the Install & That’s All feature takes system optimization to another level. You can simply install the program and let it do its work. It will intelligently carry out whatever is needed on your PC on its own. O&O Defrag 25 will configure and run all settings automatically, according to the specific requirements of your system. Maximum performance practically out of the can.

Version 25 for automatic speed and monitoring! And should you wish you can of course manually setup, configure and schedule the optimization of your system yourself.

New features at a glance

  • New: Notification of your PCs health status with S.M.A.R.T. functionality.
  • New: Drive activity display in the Windows taskbar.
  • New: Revamped Design and Displays.

Note: O&O Software guarantees full functionality under Windows 11 for its top products. All affected products are either compatible with Windows 11 when they are released or a corresponding version will follow. This operability will be ensured by either low-cost upgrades or, in the case of minor upgrades (smaller version changes such as from 25.0 to 25.5), provided free of charge.

Try and Buy!

Don’t just take our word for it! Grab your copy now in our Online Shop, or alternatively test it for 30 days now on your current Windows system – free of charge and obligation.

Here’s what some happy customers are saying about O&O Defrag:

We have been using O&O Defrag now for many years and are very satisfied, not just with the software but also the support we receive.”
Ralf Linka, Horváth & Partners

Only O&O Defrag Server is able to defrag these enormous, sometimes 400 GB files. All other products we tried simply couldn’t do it.”
Scott Brown, SMI.

Jim Harrison has a very broad sales and account management background, having previously been employed by various international companies in both senior sales and customer service roles. He joined O&O Software in March, 2006 in a sales and localization capacity, and having quickly recognized the potential for O&O Software worldwide, he was appointed Director of Sales International in 2008. Jim and his team focus on developing long-term, strategic partnerships in order to bring the O&O brand and product range to more and more international markets. Developing primarily the European, North American and Asian markets, his aim is quite clear: to have an O&O product installed on every computer, worldwide!