| File Extension: | CERT |
| File Type Description: | Netscape Certificate Index |
| File Type Developer: | AOL |
| Primary Associated Software: | Netscape Navigator |
| Primary Software Developer: | NetScape |
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VMware Workstation is the primary software program that utilizes the Netscape Certificate Index file, originally developed by VMware. Data from our web servers (annonymous users) show that CERT files are most popular in United States and are often used by Windows 10. Statisically, these users are most likely running the Google Chrome internet browser.
 | Netscape Navigator by NetScape |
 | VMware Workstation by VMware |
 | Apple Keychain Access by Apple |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
 | Mac |
 | Android |
 | Linux |
 | Solaris |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .ETF | NetScape | Text Files | Enriched Text Format E-mail Message |
| .SMS | Sega | Game Files | Sega Master System ROM |
| .NAB | NetScape | Uncommon Files | Netscape Communicator Addressbook |
| .ZH | AOL | Data Files | Netscape Communicator Java Classes File |
| .MSF | Mozilla | Uncommon Files | Mail Summary File |
| .HST | Yahoo! | Data Files | History File |
| .SBD | Microsoft Corporation | Data Files | Office Accounting Company Data File |
| .SNM | NetScape | Uncommon Files | Netscape Mail Index |
| .DB | Dwayne Richard Hipp | Database Files | Mobile Device Database File |
| .RCG | Neil Fraser | Data Files | Recog Character Recognition Set |
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