| PDF Encrypt Tool | Ace Secret Disk | PDF Page Lock | PDF Unshare | |
| 3.50 | 8.12 | 2.0.4 | 1.5.3 | |
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| Shareware | Shareware | Freeware | Freeware | Licence |
| $29.95 | $29.95 | FREE | FREE | Price |
| 3.05 MB | 6.65 MB | 11.33 MB | 19.82 MB | File size |
| Feb 25, 2014 | Feb 26, 2024 | Jun 28, 2018 | Jun 27, 2023 | Update |
| 40 | 76 | 35 | 35 | Downloads |
| Windows 2000, Windows XP, Windows 2003 | 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 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows Vista x64, Windows XP, Other | OS |
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