Voice over IP (VoIP) software is used to conduct telephone-like voice conversations across the internet. VOIP phone service is often cheaper than traditional phone service, and is becoming more popular for both business and personal calls.
| Program
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Operating systems
|
License
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Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| Abbeyphone
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Windows XP/2000
|
Closed Proprietary
|
SIP
|
|
|
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| AGEphone
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Windows XP/2000/Vista, Windows Mobile
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Trialware version / Closed Proprietary
|
SIP, SDP, RTP, STUN, UPnP
|
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Recording, Voice Mail, Multiple Services at Once, Outlook Support, Call Forwarding
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1.67 Windows, 1.71 Mobile
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| AOL Instant Messenger
|
MS Windows, Mac OS, Linux
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Freeware
|
SIP, RTP
|
|
Video, file transfer, PC to phone, phone to PC
|
|
| BitWise IM
|
Linux, Mac OS X, Windows
|
Freeware / Closed Proprietary
|
|
Blowfish
|
File transfer, whiteboard
|
1.7.2
|
| Brosix
|
Windows
|
Freeware / Closed Proprietary
|
|
AES
|
Text chat, Video, File transfer, Whiteboard, Co-Browse, Voice mail, Voice conference
|
1.7.2
|
| Cisco IP Communicator
|
Windows
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Closed Proprietary
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SCCP (Skinny), SIP, TFTP
|
|
|
2.1
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| Coccinella
|
FreeBSD, Linux, Mac OS X, Windows
|
GPL Free software
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XMPP, IAX
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Supports TLS/SSL and SASL
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File transfer, whiteboard
|
|
| Cornfed SIP User Agent
|
Linux
|
Freeware / Closed Proprietary
|
SIP, SDP, RTP, STUN
|
|
Command-Line Interface (CLI) and Gnome GUI clients
|
1.0.1
|
| CounterPath Bria
|
Windows & Mac
|
Closed Proprietary
|
SIP, STUN, ICE
|
SRTP, TLS
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Contact centric interface, Customizable Skinning engine, eyeBeam Feature set
|
2.1
|
| CounterPath eyeBeam
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Windows, Mac, Linux
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Closed Proprietary
|
SIP, STUN, ICE
|
SRTP, TLS
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Video, IM, Conferencing, Multiple login account, QoS, Outlook integration, Call transfer, 6 lines
|
1.5
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| CounterPath X-Lite
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Windows, Mac, Linux
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Freeware
|
SIP, STUN, ICE
|
|
IM, single login account, for Windows and Mac also Conferencing, Video and SIMPLE based presence]
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Windows and Mac: 3.0, Linux: 2.0
|
| damaka
|
Windows
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Freeware
|
SIP
|
Always end-to-end encrypted using unspecified algorithm.
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CallOuts™, video, desktop sharing, voice commands, file-sharing, SMS, IP Radio, RSS reader
|
2.5 (December 26, 2006)
|
| DingoTel
|
Windows
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Freeware
|
Proprietary protocol, SIP, H.323
|
Some of the Dingotel traffic is encrypted.
|
Has a 2-way radio feature, so one can tunnel FRS through the internet.
|
|
| ComunIP ClicVoz
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Windows, Linux
|
Closed Proprietary
|
SIP, SDP, ICE (draft-17), STUN, proprietary HTTPS Tunneling Protocol, RTP, TFTP
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TLS/SSL
|
- G.711, G.726, G.729, GSM, iLBC, Speex audio codecs
- AEC, AGC, VAD
- Instant Messaging
- File transfer
- Contact Management
- USB Phone inputs
- ATA conformance
|
2.5.0 (July 31, 2007)
|
| Program
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Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
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Other capabilities
|
Latest release
|
| Ekiga (formerly GnomeMeeting)
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Linux, Windows
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GPL Free software
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SIP, H.323, STUN, Zeroconf
|
|
Video, IM
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2.0.9. (April 12, 2007)
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| Express Talk
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Windows, Mac OS X, Windows CE
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Freeware version, Licensed version.
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SIP
|
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6 Lines, multiple accounts, conferencing, transfers, recording, push-to-talk (intercom)
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2.04
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| Eyeball Chat
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Windows
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Freeware
|
|
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Free VoIP, video and IM
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2.2
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| Eyeball Messenger
|
Windows
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Closed Proprietary
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SIP, STUN, TURN, ICE
|
|
Video, IM, Conferencing, Federated IM, QoS, Call transfer, 6 lines, Voice mail
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1
|
| Gizmo
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Linux, Mac OS X, Windows XP/2000
|
Freeware
|
SIP, XMPP, Jabber
|
SRTP
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Recording, voicemail, Jabber IM, Gizmo to phone, phone to Gizmo, Talk with Yahoo! Messenger, Google Talk, or Windows Live user
|
3.1.2.291 June 20, 2007
|
| The Global Exchange 2006
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Windows Only
|
Freeware
|
|
Cryptography & Custom Protocol(CP)
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Video, voice mail, missed calls
|
|
| Globe7
|
Linux, Mac OS X, Windows XP/2000
|
Freeware
|
SIP
|
SRTP
|
Call landline, mobile, Free call to 25 destinations, VOD, SMS, Free US DID number.
|
7.2.0.0 April 12, 2007
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| Google Talk
|
Windows XP/2000
|
Freeware (libjingle is Free software
|
XMPP, Jabber
|
|
Chat, file transfer, voicemail, mail via “GMail Integration”
|
1.0.0.104
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| GoSIP
|
Linux, Mac OS X, Windows XP/2000,Windows Mobile
|
Freeware
|
SIP
|
|
|
January, 2007
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| iCall
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Windows Vista/XP/2000
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Freeware
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SIP
|
|
Free PC to Phone calling in the US and Canada, Voicemail
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2.0.0.58
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| iChat AV
|
Mac
|
Closed Proprietary
|
SIP AIM ICQ Jabber H263 H264
|
|
Integrated, PBX independent
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January 2007
|
| TABLETmedia iFon™
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Windows Mobile 2003/2003SE/5.0, WindowsCE 4.x/5.x
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Commercial
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SIP, H.261, H.263, G.711, G.722, G.723.1, G.729A, GSM, AMR
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Optional: MD5/Digest, DES, AES
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Mobile VoIP, videoconferencing, messaging, dual-mode devices support
|
5.10.59
|
| iVisit
|
Windows & Mac
|
Freeware / Closed Proprietary
|
Proprietary P2P protocol
|
|
8-way videoconferencing, file sharing, recording in QuickTime format
|
3.6.3 (verified on July 7th, 2006)
|
| Jabbin
|
Linux, Windows
|
GPL Free software
|
Libjingle, XMPP, Jabber
|
SSL
|
Instant messaging, file transfer, compatible with Google Talk
|
2.0b2
|
| KCall
|
Linux (KDE)
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GPL / LGPL Free software
|
SIP
|
|
|
0.5.2 (10th July 2005)
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| Program
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Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| KPhone
|
Linux (KDE)
|
GPL Free software
|
SIP, STUN, NAPTR/SRV
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SRTP
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Video, voice, IM, external Sessions, IPv6 support for UDP
|
1.0.2 (22nd September 2006)
|
| Linphone
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Linux and Microsoft Windows
|
Free software and open source
|
SIP
|
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Video, IM, STUN, IPv6
|
1.7.1 (16 April 2007)
|
| Lotus Sametime
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Linux and Microsoft Windows, Mac OS X
|
Closed Proprietary
|
SIP, SIMPLE, T.120 and H.323
|
|
|
7.5.1 (April 2007)
|
| Lynxphone
|
Windows, Mac OS X, Linux, NetBSD, FreeBSD
|
Freeware
|
SIP, STUN, ICE
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SRTP, TLS
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Voice only, multiple-language support, Windows Address Book integration, skins, custom ringtones
|
0.6.0
|
| MindSpring (formerly Vling)
|
Windows 2000, Windows XP
|
Freeware
|
SIP, XMPP
|
|
Instant messaging, PC to phone, file transfer, free voicemail
|
2.0
|
| Minisip
|
Windows XP, 2000, Linux, Windows Mobile
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GPL / LGPL Free software
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SIP
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SRTP, TLS, MIKEY (DH, PSK, PKE), end to end encryption
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Video, IM Conferencing
|
|
| Mirial (DyLogic)
|
Windows 2000/XP/2003/Vista
|
Closed Proprietary
|
SIP, H.323
|
|
- H.264 video support
- HD 720p video rx/tx
- G.722.1/C wideband audio
- Call recording/export
- Contact management
- DV camera inputs
- T.120, file transfer
- Acoustic Echo Canceller
- Far End Camera Control
|
5.2 (June 8, 2007)
|
| Nadiz Phone
|
Windows 2000/XP/2003
|
Freeware
|
SIP, RTP, STUN, ICE
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SRTP, TLS, AES
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- Call log
- Video capture
- H.264 video support
|
1.1-Early Beta! (April 14, 2007)
|
| OpenH323 and OPAL
|
Linux, Mac OS X, Windows, Windows Mobile, VxWorks
|
MPL free software
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H.323, SIP, IAX, RTP, STUN
|
SRTP
|
|
OpenH323: 1.19.0.1 (June 12, 2006), OPAL: 2.2.4 (January 24, 2007)
|
| PeerMe
|
Windows 2000 or Windows XP
|
Freeware
|
�
|
|
|
|
| PhoneGaim
|
Linux (Linspire), Windows XP/2000
|
GPL free software
|
SIP
|
|
|
|
| Phoner and PhonerLite
|
Windows
|
Freeware
|
SIP, CAPI
|
TLS, SRTP
|
recording, voicemail
|
Phoner: 2.11 (October 10th, 2007), PhonerLite: 1.38 (October 10th, 2007)
|
| Program
|
Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| PJSIP
|
Linux, Win32 (NT/200/XP), WinCE/Windows Mobile, Mac OS X, FreeBSD, RTEMS, Symbian, etc
|
GPL free software/Closed Proprietary
|
SIP
|
TLS
|
Media stack included, Python API
|
0.5.10.1 (20 February 2007)
|
| Remote Origin, Inc.
|
Windows
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Closed Proprietary
|
IAX2
|
Digest-Authentication
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TTY, USB Token DRM, Re-Branding, Custom Development Available
|
1.0 (March 1st, 2007)
|
| ReSIProcate
|
Linux, Mac OS X, Windows
|
Vovida Software License (open source)
|
SIP
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TLS, Identity, Digest-Authentication
|
SIP Stack, Dialog layer (DUM), Proxy (repro)
|
1.1 (March 30th, 2007)
|
| SecurePTT
|
Microsoft Windows / Symbian OS
|
Closed Proprietary
|
Proprietary protocol, RTP
|
AES-256 encryption, RSA-2048 key exchange
|
SecurePTT Voice communication, SecurePTT Camera, SecurePTT Chat
|
1.5
|
| SightSpeed
|
Mac OS X / Windows
|
Freeware
|
SIP,RTP,Proprietary P2P protocol
|
|
video, voicemail, phone in, phone out, multiparty calling, conference recording, text messaging, interop with hardware SIP phones, nat traversal, video mail
|
6.0
|
| SIP Communicator
|
Linux, Mac, Windows XP/2000 (all java supported)
|
LGPL free software
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SIP/SIMPLE, Jabber
|
|
Text messaging
|
|
| SJphone
|
Windows 2000/Windows XP, Windows Vista, Mac OS X, Linux, Windows Mobile 5
|
Freeware
|
SIP, RTP, STUN, Jabber, H.323
|
|
Customisation for ITSP
|
Windows XP/Vista: 1.65 beta (Mar 27.2007)
|
| Skype
|
Windows 2000/XP, Mac OS X, Linux(32-bit i386 only), Windows Mobile
|
Freeware
|
Proprietary P2P protocol
|
Encrypted
|
Video (not on Linux yet), file transfer, voicemail, Skype to phone, phone to Skype, additional P2P extensions (games, whiteboard, etc…)
|
Windows: 3.2.0.163, Linux: 1.4.0.4, Mac OS X: 2.6.0.148, Windows Mobile: 2.2.0.36 (All as of June 17, 2007)
|
| SmeetX, Smeet SDK
|
Linux, Microsoft Windows
|
|
SIP, H.323, STUN, proprietary P2P protocol
|
Optional encryption plugin
|
Video (H.263, H.263+, MPEG-4 and H.264), ActiveX control, XML, SOAP
|
1.3.3 (as of April 2007)
|
| SoftBX
|
Microsoft/Windows XP/Vista/Outlook 2000/2003/Windows Mobile 6
|
Closed Proprietary
|
SIP, H.323,
|
|
3 way/multi-party conference, presence display, operator, call centre agent
|
4.1.1003 (January 2007)
|
| Switchboard, The
|
Windows 2000/XP, Mac OS X, Linux, OS/2, and any other Java enabled platform
|
Freeware
|
Proprietary P2P protocol
|
Encrypted
|
web-based (no installation), conferencing, file transfer, ICQ, AIM, and MSN compatibility
|
3.2 (March 2007)
|
| Program
|
Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| TelTel
|
Windows
|
Freeware
|
SIP, STUN
|
TLS, SRTP
|
IM, TelTel-Out, TelTel-In
|
0.9.2.18
|
| TERAVoice Server
|
Windows 2000, XP, 2003, Vista
|
Freeware / Closed Proprietary
|
SIP, H.323, ISDN, analog
|
TLS
|
Soft-PBX, IVR, Voicemail, Voice Portal Server
|
2004 (17th of April 2005)
|
| Tivi
|
Windows, many cell phones, Nokia smartphones
|
Freeware
|
|
|
tivi-to-land line
|
Video call: 0.127a, Lite: 0.602.
|
| Twinkle
|
Linux
|
GPL free software
|
SIP
|
SRTP, ZRTP
|
|
1.1 (July 21, 2007)
|
| Vbuzzer
|
Windows XP
|
Closed / Proprietary freeware
|
SIP
|
TLS
|
IM (MSN), voicemail, personalized voice greeting.
|
2.0.282
|
| VoipDiscount
|
Windows 2000/XP/Vista
|
Freeware
|
SIP
|
|
|
|
| VOIspeed
|
Windows 2000/XP
|
Freeware
|
SIP
|
|
IPBX, IVR, CRM integration, LCR, Voicemail
|
4
|
| vPhone
|
Windows
|
Freeware + proprietary
|
SIP, GSM, VOIP
|
|
Conferencing, address book, SMS, chat
|
| WengoPhone
|
Linux, Mac OS X, Windows XP/2000, SmartPhone, Windows Mobile
|
GPL free software
|
SIP
|
AES-128|[1]
|
Video, IM (MSN, AIM, ICQ, Yahoo!, Jabber, GoogleTalk), voicemail, wengo to phone.
|
v2.1.0 (May 15, 2007)
|
| Program
|
Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| Windows Live Messenger
|
Windows 2000/XP
|
Freeware
|
SIP, RTP, proprietary
|
|
Video, voice, chat, text messaging, PC to Phone
|
|
| wxCommunicator
|
Windows XP/2000
|
GPL free software
|
SIP, STUN, TURN, ICE,
|
|
Voice, chat, recording, conferencing, multiple sip profiles
|
|
| Yahoo! Messenger
|
Microsoft Windows, Mac OS (8, 9, X), (Linux/FreeBSD version not VoIP capable)
|
Freeware
|
SIP (using TLS) and RTP (media)
|
|
Video, file transfer, PC to phone, phone to PC
|
|
| YakaPhone
|
Microsoft Windows, Mac OS (8, 9, X), (Linux/FreeBSD)
|
Freeware
|
IAX, IAX2
|
|
Audio, Video, Text & SMS, PC to phone, phone to PC
|
|
| XMeeting
|
Mac OS X
|
BSD free software
|
SIP, H323, STUN
|
|
Video, call recording
|
v0.33
|
| Zfone (formerly PGPfone)
|
Linux, Mac OS X, Windows
|
Viewable source / Proprietary license (includes time bomb provision)
|
SIP and RTP
|
SRTP, ZRTP
|
|
Beta (6th of December 2006)
|
| Zoiper (formerly Idefisk)
|
Linux, Mac OS X, Windows
|
Shareware / Proprietary
|
SIP, RTP, STUN, IAX, IAX2
|
|
Native conferencing, address book, outlook integration, click to dial
|
Zoiper 2.07 - 28th of August, 2007
|
| Program
|
Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Latest release
|
| Program
|
Operating systems
|
Licence
|
Protocols/based upon/compatible with
|
Encryption
|
Other capabilities
|
Key and target markets
|
Latest release
|
| 3cx phone system
|
Windows XP, 2000, 2003.
|
Freeware / Closed Proprietary
|
SIP
|
|
IP PBX
|
SMB
|
2.0
|
| Asterisk PBX
|
Linux for PPC, OpenBSD, FreeBSD, Mac OS X Jaguar.
|
GPL free software / Proprietary
|
SIP, H.323, IAX
|
SRTP/ZRTP
|
|
|
1.4.5, 15 June 2007
|
| Brekeke PBX
|
Windows and Linux
|
Free 60-day trial / Closed Proprietary
|
SIP
|
|
IP PBX, Voicemail, Conference, ARS
|
Carriers, ITSP, Enterprise, SMB
|
2.0
|
| Brekeke SIP Server
|
Windows, Linux, Mac OS and Solaris
|
Free Academic License / Free 60-day trial / Closed Proprietary
|
SIP
|
|
SIP Registrar/Proxy, NAT Traversal, Authentication, Dial Plan, Plugin APIs
|
Carriers, ITSP, Enterprise, SMB, R&D
|
2.0
|
| Customer Interaction Center
|
Windows 2003/XP
|
Closed Proprietary
|
SIP
|
|
IP PBX, ACD, IVR, Unified Messaging, Multi-media queueing, Skills-based routing
|
Enterprise and Contact (Call) Centers
|
2.4
|
| Eyeball Server Suite
|
Red Hat Eneterprise 4 and Fedora Core 4 or higher
|
Proprietary
|
SIP, XMPP, STUN, TURN ICE NAT Traversal
|
|
IM server, NAT Traversal Server, SIP Proxy
|
Enterprise, Developer, Service Providers
|
| CommuniGate Pro
|
Solaris, Linux, BSD, OSX, Windows, AIX, HPUX
|
Freeware / Closed Proprietary
|
SIP, XMPP, XIMSS
|
TLS/SSL/HTTPS/SRTP/File Encryption/Cert Authority
|
VirtualPBX, Conferencing, ACD, Development environment, Flash UI
|
Carriers, IT-SP, Enterprise
|
5.1.x
|
| FreeSWITCH
|
Windows, Linux, BSD, Solaris
|
Open MPL free software
|
SIP, STUN, XMPP, Jabber, IAX
|
SRTP
|
Recording, Voicemail, Jabber IM, Google Talk, Proxy, Media gateway, Soft-PBX, IVR,
|
1.0Beta September 10, 2007
|
| GNU Gatekeeper
|
Linux, Mac OS X, Windows XP/2000, FreeBSD
|
GPL Free software
|
H.323
|
|
Routing, Accounting, AUthorization
|
|
2.2.4
|
| IXC Softswitch
|
FreeBSD
|
Closed/ Proprietary
|
H.323, SIP, MGCP, RADIUS
|
|
Includes integrated billing, codecs transcoding, protocol conversion, financial tools.
|
Carriers, ITSP, Enterprise, SMB. Services: origination, termination, DIDs, calling cards
|
4.4.x
|
| Nortel’s Аpplication Server 5200(mcs)
|
Linux
|
Proprietary
|
SIP , H.323
|
SSL encryption
|
multimedia conferencing, instant messaging (IM), presence and other collaboration tools
|
Unified Communication
|
5200
|
| Merak Mail Server
|
Windows, Linux
|
Proprietary
|
SIP Registrar, Redirect, Proxy, SIMPLE, XMPP
|
SSL/TLS/HTTPS
|
NAT Traversal, PBX properties, gateways, routing, ENUM, NAPTR, unified administration and authentication (email, IM)
|
SMB, Enterprise, ISP
|
9.0.2
|
| NetUP UTM billing software
|
Linux, FreeBSD, Solaris, Windows (NT, 2000, XP, 2003)
|
Closed Proprietary
|
H.323, SIP
|
RADIUS
|
Java-based multiplatform administration interface
|
VoIP providers and ISP
|
5.2.1-001
|
| OpenSER
|
Linux, BSD, Solaris
|
GPL free software Open source
|
SIP
|
TLS
|
ENUM, IM, XMPP IM gateway, SMS gateway
|
Carrier, ITSP, Enterprise
|
1.2.1
|
| PACER
|
Windows, Linux, Solaris, AIX, HPUX
|
Closed Proprietary
|
|
TLS, SSL, HTTPS
|
IVR, Voice broadcasting, Virtual PBX, ACD, XML Messaging, Development environment
|
Enterprise, Developer, Service Providers
|
12.1
|
| pbxnsip
|
Windows, Linux
|
Closed Proprietary
|
SIP
|
TLS for signalling, SRTP and SDES for media and key exchange
|
IVR, Multicast Paging, Call Recording, Barge In, NAT-Traversal, Trunking, Cell Phone Support, Built-in mini-SBC, multiple-IP Address, Plug and Play, IM, Presence
|
Appliances, Server
|
2.1 (release)
|
| Solegy-OSS Desktop Dialer
|
Microsoft Windows
|
Freeware
|
SIP
|
Hash (CBCOM mode) Encryption
|
Call transfer (SIP REFER), IM (SIP/SIMPLE or Jabber), NAT Traversal (STUN), multiple codecs (iLBC, Speex, GSM, G.711, G.723, etc.)
|
Service Providers, Developers
|
Beta (December 2006)
|
| SIP Express Router (SER)
|
BSD, Linux, Solaris
|
GPL free software
|
SIP
|
|
SIP Registrar/Proxy, Authentication, DIAMETER, RADIUS, ENUM, and many others…
|
SIP Service Providers
|
2.0.0 Ottendorf
|
| sipX ECS IP PBX
|
Linux
|
Open source L-GPL
|
Native SIP Call Control
|
HTTPS, TLS
|
Full redundancy (HA), plug & play management including phones and gateways, fully featured, 100% SIP standards based
|
Enterprises between 200 and 10,000 users, multi-site
|
3.6, Feb 12, 2007
|
| SoftBX
|
Microsoft/Windows XP/Server 2000/2003/Windows Mobile 6
|
Closed Proprietary
|
SIP, H.323, CAPI,
|
|
4-2000 users/per server, up to 512,000 ITSP platform, Voice Mail, Conference, Call Centre
|
ITSP Hosting Platforms, PBX replacement, Appliances
|
4.3.1001 (June 2007)
|
| *starShop
|
|
Open source GPL
|
Based on Asterisk PBX
|
|
(PBX, not client)
|
Calling Shops and Internet cafes.
|
0.02 (29th of November 2005)
|
| SwyxWare
|
Microsoft Windows XP/2000/2003/Vista
|
Closed Proprietary
|
SIP, H.323, CAPI
|
|
Too Many to List
|
Businesses from 5 users to 10000 Users
|
6.02 (1th May 2007)
|
| YATE
|
FreeBSD, Linux, Microsoft Windows, Solaris
|
GPL free software Open source
|
H.323, IAX, Jingle, SIP
|
|
SoftPBX, SIP SBC/Registrar/Proxy, H.323 Proxy, FAX, IVR, Conference, Music on Hold, Radius and many others
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Small office to carrier grade
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1.2.0 (16th April 2007)
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| ComunIP SIP Server
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Linux, Microsoft Windows
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Closed Proprietary
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SIP, HTTP, Fast-CGI
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TLS/SSL
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General-purpose SIP server with a SOA architecture - uses Fast-CGI as backend processing (PHP as default language for customizing server-side applications), full web server integration (Apache, Lighttpd)
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Application Service Provider Model to Carrier Grade, including support of SaaS delivery model
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2.5.0 (July 31, 2007)
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| Mysipswitch
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Linux
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BSD free software Open source
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SIP, Ajax
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SSL
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SIP proxy server which allows the use of multiple SIP accounts with a single SIP login
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Individuals
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August 2007
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| Program
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Operating systems
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Licence
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Protocols/based upon/compatible with
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Encryption
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Other capabilities
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Key and target markets
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Latest release
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