| PDF Password Protect | PDF Protector, Splitter and Merger PRO | Free PDF Protector 4dots | PDF Encryption | |
| 3.4.0 | 1.0.8 | 4.9 | 3.4.0 | |
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| Shareware | Shareware | Freeware | Shareware | Licence |
| $27.00 | $19.95 | FREE | $27.00 | Price |
| 4.06 MB | 1.98 MB | 14.97 MB | 4.06 MB | File size |
| Jul 21, 2014 | Jan 1, 2011 | Jan 1, 2024 | Aug 7, 2014 | Update |
| 29 | 29 | 22 | 36 | Downloads |
| Windows XP, Windows 2000, WinNT 4.x | Win2000, Windows 7 x32, Windows 7 x64, Windows Vista, Windows Vista x64, Windows XP | Win2000, Windows XP, Windows 7 x32, Windows 7 x64, Windows 8, Windows 10, WinServer, WinOther, Windows Vista, Windows Vista x64 | Windows XP, Windows 2000, WinNT 4.x | OS |
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