| Anti-Spam SMTP Proxy Server | FortKnox Personal Firewall | ICS CUBE | UserGate Proxy & Firewall | |
| 2.6.5 21218 | 22.0.610 | 5.2.5.180412 | 6.5 | |
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| Open Source | Shareware | Shareware | Shareware | Licence |
| FREE | $22.95 | $300.00 | $194.00 | Price |
| 2.50 MB | 4.82 MB | 831.91 MB | 77.99 MB | File size |
| Aug 18, 2021 | Sep 7, 2018 | Apr 11, 2018 | Mar 19, 2015 | Update |
| 44 | 30 | 22 | 23 | Downloads |
| Windows 7, Windows 7 x64, Windows 8, Windows 8 x64, Windows 10, Windows 10 x64, Linux, Mac OS X | 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 | Windows XP, Windows 7 x32, Windows 7 x64, Windows 8, WinServer, Windows Vista, Windows Vista x64 | OS |
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