EldoS | Feel safer!

Software components for data protection, secure storage and transfer


Instant control over file and folder operations in Windows and .NET applications

CallbackFilter lets you monitor and control disk activity, track file and directory operations (create, read, write, rename etc.), alter file data, encrypt files and much more...

CallbackFilter is a component for use in software development for Windows® platform.

Clients say:

On-the-fly encryption of data provided by your CallbackFilter component came very handy.

Latest version

Release:  4.1.105
03 March 2017

Pre-release:  5.0.110
09 June 2017

Most wanted features Vote or request a feature

Available packages

Available packages and features

Feature CallbackFilter Lite CallbackFilter Professional
Price Both Free and paid licenses are available Price Calculator
Asynchronous notifications (AddFilterCallbackRule with *Notify flag) yes yes
Access rules yes yes
Default rules yes yes
Passthrough rules yes yes
Reparse rules yes yes
Professional package only options
Synchronous callbacks (AddFilterCallbackRule with *Callback flag) no yes
Virtual files no yes
Kernel-mode driver source code is available
(as a separate option during license purchase)
no yes

Miss a feature? Tell us about your idea using Wish List.

To request more details please use our feedback form or Web-based Helpdesk system.

To get acquainted download your own copy to try Solid File System for free. Ready to pull the trigger? Refer to the Prices and Ordering page for complete licensing information.


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As of July 15, 2016 EldoS business operates as a division of /n software, inc. For more information, please read the announcement.

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