🚀 Contribute! Buy me a coffee

Compare .OSTs online

100% Free ost file Comparison online tools. Free Online ost comparison

Our free ost comparison online tools does not required any registrations and installations on your system, 100% free and online outlook offline data file (.ost) comparison tool. Open from any device with a modern browser like Chrome, Opera and Firefox.

Best & secure online ost comparison is custom developed tool by Filproinfo.com, all files processing perform on our own dedicated cloud servers under dynamic file system that automatically remove all processed files from our cloud servers after 1 to 24 hours.

Free Online OST Tools & Apps

Access powerful and secure free online OST tools to convert, view, edit, merge, split, and compare OST files — all without installing any software. Our tools support the .OST (Outlook Offline Data File) file extension and run smoothly in any modern browser.

Select a tool below to explore features and manage your OST files directly from your device with ease.

Related OST File Extensions & Tools

OST default file extension is .OST and other similer related extensions and their tools are:

FAQ

  • ❓ How can I Compare OST (outlook offline data file)?

    First, you need to add a file for Comparison: drag & drop your OST file or click inside the white area for choose a file. Then click the "Compare" button. It will now allow you to Download your OST file.

  • ⏱️ How long does it take to Compare OST?

    This Comparer works fast. You can Compare OST in a few seconds.

  • 🛡️ Is it safe to Compare OST using free Comparer?

    Of course! The download link of OST files will be available instantly after Comparing. We delete uploaded files after 24 hours and the download links will stop working after this time period. No one has access to your files. File Comparing (including outlook offline data file .ost) is absolutely safe.

  • 💻 Can I Compare OST on Mac OS, Android or Linux?

    Yes, you can use free Comparer app on any operating system that has a web browser. Our OST Comparer works online and does not require any software installation.

  • 🌐 What browser should I use to Compare OST?

    You can use any modern browser to Compare OST, for example, Google Chrome, Firefox, Opera, Safari.
Browse all file extensions Browse all software programs Browse free online tools

This tool and page updated at: 12-Apr-2025




About FileProInfo: FileProInfo is a trusted platform dedicated to file formats and software programs. We provide accurate technical details, easy-to-use navigation, and advanced search capabilities to help users explore, manage, and convert file types efficiently.


Online File Converter

Listed file converters are from the wide range of online file converter.

These are the most polular file/document converters based on the user's review and usage on the FileProInfo.

PDF Converter
DOCX Converter
JPG Converter
MP4 Converter
MP3 Converter
TIF Converter
MOV Converter
GIF Converter
XPX Converter
RAR Converter

All Converters