Top 4 Best OST Splitter Tool for Windows Users – Free Download

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OST or Offline Storage Table files are those files that contain all the data associated with the Outlook Exchange Server. OST files store the replica of data from the starting when we have installed the Outlook Application. As the time passes by, OST files become large as it contains all the contacts, calendars, emails and also junk and repeated conversations. It becomes difficult to work with large-sized OST files, as the outlook application becomes slow, and also problems in synchronization of data increases because of which we need to split the OST files.

There are many OST Splitter tools available in the web-market. However, it is very difficult for you to choose the best one for you to break or split OST file. Hence, in this article, I will explain to you the Best 4 OST Splitter tools for Windows and Mac operating systems. It helps you to split OST files with utmost ease and precision.

Let us study them one by one.

DRS OST Splitter

DRS OST Splitter is one of the award-winning software’s that is especially designed to break or split OST file that are large in size. The OST File Splitter is a standalone tool and don’t require to have Outlook installation. The tool offers you to encrypt your output PST file to prevent it from unwanted access. The software comes with a demo version where you can easily evaluate the working functionality of the software. Using its demo version, you can split first 50 OST emails absolutely free.

DRS OST Splitter

Let us take a look at some important features of the software:


  • It splits oversized Outlook OST files into Smaller PST files.
  • Maintains the data hierarchy intact.
  • Allows you to add passwords to the resultant PST files.
  • It allows you to split the Outlook file including your emails, contacts, tasks, calendars, etc.
  • Offers to add multiple files or folders simultaneously.
  • This software can run on various versions of Windows.
  • It comes with a demo version so that you can get an actual idea of software working before buying it.
  • Easy and simple user-interface.

download ost splitter

Aryson OST Splitter

Aryson is a core competitor in the market amongst recovery software solutions. Aryson OST splitter tool is programmed by keeping in mind the various issues that users face while splitting the OST file by manual mechanism.

ary ost file splitter

Let us take an eye upon the features of the Aryson OST splitter:


  • It makes sure that your data remains safe throughout the process.
  • Has the feature to split single and Multiple OST files at the same time.
  • It can split your large-sized OST files and make them into PST files based on size, sender email id, data, folder, year, etc.
  • You can also make your resultant files password-protected for security purposes.
  • Both ANSI and UNICODE files are supported by the software.
  • You can split newly created as well as old archive files of outlook exchange.
  • It also comes with the demo version of the software.

BitRecover OST Split Tool

BitRecover has made an OST Splitter tool that can split your large OST files into multiple smaller fractional parts which are based on the filter like date, size, folder, and year. It supports all the OST files of various outlook versions.

bitrecover ost split

Some features of bitrecover software are as follows:


  • It can compact your large OST files easily.
  • Management of Outlook files in an organized manner is enforced.
  • This tool can split multiple Outlook files at the same time.
  • We can easily work upon orphaned OST files using this tool.
  • It also provides some filters to manually archive Outlook data files.

SysTools OST File Splitter

SysTools is another software that provides splitting of OST files. It also eliminates the chances of losing the data files during OST splitting. This tool helps in breaking the OST files along with contacts, emails, etc.

Systools OST Splitter

Below mentioned are some of the main features of the software:


  • Oversized OST files can be split into various parts by folder, email id, date, size, category, year.
  • It provides you to repair OST files before splitting your files.
  • The software provides you an option to split newly created OST files and Archive OST files.
  • Installation of outlook is not necessary to use this tool.
  • You can easily split your OST files without any size limit.


In the article, I had explained to you the best 4 OST Splitter Tools for Windows users. All the tools have similar features but yet are different from each other. I think that now you are well versed with all four of them. In my opinion, you should try the DRS OST Splitter Tool for the easy splitting of your OST files.

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