| Ace Secret Disk | PDF Unshare | PDF Protection | Copysafe PDF Protection | |
| 8.12 | 1.5.3 | 18.0 | 3.0 | |
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| Shareware | Freeware | Shareware | Shareware | Licence |
| $29.95 | FREE | $29.00 | $295.00 | Price |
| 6.65 MB | 19.82 MB | 5.20 MB | 16.52 MB | File size |
| Feb 26, 2024 | Jun 27, 2023 | Jun 14, 2018 | Dec 30, 2018 | Update |
| 40 | 32 | 22 | 9 | Downloads |
| Win11, Win10, Windows 7 x32, Windows 7 x64, Windows 8 | Win2000, Windows 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows Vista x64, Windows XP, Other | 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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