| Lizard Safeguard PDF Writer | Ace Secret Disk | PDF Protection | Copysafe PDF Protection | |
| 3.0.20 | 8.12 | 18.0 | 3.0 | |
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| Trialware | Shareware | Shareware | Shareware | Licence |
| $2 495.00 | $29.95 | $29.00 | $295.00 | Price |
| 3.90 MB | 6.65 MB | 5.20 MB | 16.52 MB | File size |
| Nov 11, 2015 | Feb 26, 2024 | Jun 14, 2018 | Dec 30, 2018 | Update |
| 18 | 70 | 31 | 14 | Downloads |
| Windows XP, Windows Vista, Windows Vista x64, Windows 7, Windows 7 x64 | Win11, Win10, Windows 7 x32, Windows 7 x64, Windows 8 | Win2000, Windows XP, Windows 7 x32, Windows 7 x64, Windows 8, Windows 10, WinServer, WinOther, Windows Vista, Windows Vista x64 | Win2000, Windows XP, Windows 7 x32, Windows 7 x64, Windows 8, Windows 10, WinServer, WinOther, Windows Vista, Windows Vista x64 | OS |
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