What is the ZL4 file format?
A file with the .ZL4 extension is a file known as ZoneAlarm Mailsafe Renamed CHM. It belongs to the Misc Files category. This format is associated with Check Point Software Technologies Ltd..
The reliable way to open a .ZL4 file is with software that recognises this exact format, rather than guessing from the file name. If you are not sure what created a file, our file identifier can read its first bytes and name the real format, even when the file has been renamed.
We are still gathering the list of programs that open .ZL4 files. A fully verified, hand-written description of this format is being prepared; until then, the details on this page are drawn directly from our database.
Format details
in a nutshellFULL NAMEZoneAlarm Mailsafe Renamed CHM
DEVELOPERCheck Point Software Technologies Ltd.
CATEGORYMisc Files
Community Q&A
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