| Axon Business Virtual PBx System | PCBest Networks SIP PBX | Axon Free Virtual PBx System | Express Talk Business VoIP Softphone | |
| 2.22 | V2.01 | 2.20 | 4.35 | |
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| Shareware | Freeware | Freeware | Shareware | Licence |
| $195.00 | FREE | FREE | $49.99 | Price |
| 1.25 MB | 4.04 MB | 1.22 MB | 0.63 MB | File size |
| Mar 2, 2016 | Jul 22, 2009 | May 18, 2011 | Oct 19, 2016 | Update |
| 22 | 13 | 23 | 21 | Downloads |
| Windows 8, Windows 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows XP, Windows 10 | Windows 2000, Windows XP, Windows 2003, Windows Vista, Windows Vista | Windows 8, Windows 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows XP, Windows 10, Windows 11 | Windows 8, Windows 7 x32, Windows 7 x64, WinOther, WinServer, Windows Vista, Windows XP, Windows 10, Windows 11 | OS |
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