NEW: O&O DiskStat 4.0! Get a complete overview of your Disk usage and optimise it!

O&O DiskStat allows you to analyze used space on your hard disk and see what is taking up valuable space.

Regardless of whether at home or in a company network, ever-increasing amounts of data can severely slow down the time needed for accessing files and making backups. You’ll be amazed at how much disk space you can win back simply by getting rid of the ballast. O&O DiskStat 4.0 allows you to analyze used space on your hard disk with the help of detailed tables. Once identified, you can get rid of the space-wasters on your disks, gaining space for new programs and data, and saving money you might have spent on a new disk.

Acts like a detective on the lookout for wasted space on the hard disk

O&O DiskStat provides you with an overall view of just how your hard disk is being used. The product makes it simple for you to track down those files and folders that are taking up too much space on your hard disk, and causing your computer to slow down. This versatile tool offers a Windows-Explorer type interface and a whole range of options to combat wasted space, including deletion and duplicate search. An overview of the storage space history enables users to predict whether and when storage space will be exhausted at current constant rates.

With detailed Tables and Categories

O&O DiskStat allows you to analyze used space on your hard disk with the help of tables and several categories. After reading the hard disk, the user gets an overview of the entire disk. Used space on every partition is displayed in user-friendly tables. In addition, the largest files on the disk are also displayed for quick and easy access.

In the new version, you can determine all file categories over the entire computer or just network drives or have the drive usage extrapolated.

Entire program and Interface revamped

For Version 4.0 we have effectively reproduced O&O DiskStat. The engine has been revamped and vastly improved, as has the interface which is now much more intuitive and modern. Speed of search and ability to filter and take action with space-wasting data is now quicker and easier than ever before. O&O DiskStat 4.0 also offers enhanced support for cloud files such as Microsoft OneDrive. Users can now also identify potential duplicates using a highly optimized procedure and easily mark them for transfer or deletion in batch processing.

Main and new features in Version 4.0:


  • Analysis of directories, drives, drive groups or the entire computer
  • Save the analysis results
  • Display:

  • Display of the largest files
  • Display of the largest directories
  • Display of file types based on file extensions
  • View space usage based on file categories
  • Predict if and when the storage space will be used up with currently constant development
  • Copy, move and delete selected files and directories
  • Create new directories with the ability to switch to them instantly
  • Renaming files and directories
  • Cloud Files:

  • Includes Microsoft OneDrive files
  • Duplicates:

  • Finding Duplicates – Define minimum size
  • Duplicates – Exclude directories

System Requirements:

  • Windows 8 or higher.
  • Microsoft .NET Framework 4.8 or higher.
  • Portable, therefore no installation necessary.
  • 10 MB Disk Space
  • 1 GB RAM (recommended 2 GB)
  • Internet Connection
  • Available in English, German and French.

Try or buy now!

Download the O&O DiskStat free 30-day trial from our Website! Or buy now to start seeing exactly what is going on inside your machine, and how you can free up space and improve performance:

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!