Share secure documents to the most popular devices and viewers

FileOpen Systems provides a versatile set of plug-ins/clients to access documents encrypted with the FileOpen software. These include a plug-in for Adobe Acrobat and Reader, a client for Microsoft Office documents, an iPad / iPhone app and an Android app. We also offer a zero-client install solution, FileOpen Viewer.

The following free clients may be downloaded to view FileOpen-secured documents (along with the permission of the publisher), and may also be used in testing FileOpen document security solutions.


Secure Document Viewer for Adobe Reader/Acrobat

FileOpen Plug-In for Adobe Reader:   Distribute secure documents to display in Adobe Reader / Acrobat. 

Secure Document Viewer - No Plugin Required

FileOpen Viewer — No plug-in required:  Display FileOpen-protected documents in any Web browser, with no local installation of software. 

Secure Document Viewer for Word, Excel and PowerPoint

FileOpen Client for Microsoft Office:  Enable secure access to FileOpen-protected Word®, PowerPoint® and Excel® files in their native format. 

Secure Viewer for iOS

FileOpen Viewer for iPhone and iPad: Allow access to FileOpen-protected PDF and OPN files while on iPhones and iPads. 

Secure Document Viewer for Android

FileOpen Viewer for Android:  Extend secure access and policy enforcement to FileOpen-protected OPN files on an Android device. 


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"Choosing FileOpen for our document security needs has given us a robust and secure on-premise solution for our internal document distribution. It runs on our virtual servers with seamless integration with our Active Directory environment, making our ability to secure our IP easy and reliable. Also with the available mobile apps we are able to extend the same level of security to our mobile devices.” 

Denny Bono | IT Coordinator
American Crane & Equipment Corporation