What is fileopen client installers? FileOpen Client Installers FileOpen Systems provides a set of free plug-ins and viewers that can be used to access documents encrypted with the FileOpen software. These include plug-ins for Adobe Acrobat™ and Reader™, and standalone viewers for handheld platforms.What is fileopen api and how to use it? fileopen.api is a module belonging to FileOpen WebPublisher Security Plug-in from FileOpen Systems Inc.. Non-system processes like fileopen.api originate from software you installed on your system.Where can i find the link to fileopen? You can find a direct link to FileOpen’s website in the email we have sent you or go to the following address: http://plugin.fileopen.com/. Do I need to install FileOpen every time I buy a standard from DS? No, that is not necessary. Once you have installed your plugin, it will work for all the files you buy.How does fileopen hosted protect my documents? While FileOpen Hosted service handles the encryption of your files, document security is never compromised. No transmission of unencrypted files to the FileOpen Hosted server is necessary; your unencrypted files never leave your desktop or server where they reside.