Comparison of VoIP software

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VoIP software is used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. VoIP stands for "Voice over IP". For residential markets, VoIP phone service is often cheaper than traditional public switched telephone network (PSTN) service and can remove geographic restrictions to telephone numbers (i.e. have a "New York" PSTN phone number in Tokyo).

For enterprise or business markets, VoIP enables the enterprise to manage a single network (the IP network) instead of separate voice and data networks, while enabling advanced and flexible capabilities to the end user.

Softphones are end-user–based clients for initiating and receiving voice and video communications over the IP network with the standard functionality of most "original" telephones and usually allow integration with IP phones and USB phones instead of utilizing a computer's microphone and speakers (or headset). Most softphone clients run on the open Session Initiation Protocol (SIP) supporting various codecs. Skype runs on a closed proprietary network. Online "Chat" programs now also incorporate voice and video communications.

Other VoIP software applications include conferencing servers, intercom systems, virtual FXOs and adapted telephony software which concurrently support VoIP and PSTN like IVR systems, dial in dictation, on hold and call recording servers.

Contents

General softphone clients

Program Operating systems License Protocols/based upon/compatible with Encryption Other capabilities Latest release
AOL Instant Messenger Linux, MAC OS, Windows Freeware / Closed Proprietary SIP (Windows ver. only), RTP Template:Unk Video, file transfer, PC to phone, phone to PC
BitWise IM Linux, Mac OS X, Windows Freeware / Closed Proprietary Blowfish File transfer, whiteboard 1.7.3
Brosix Windows Freeware / Closed Proprietary Template:Unk Text chat, File transfer, Video chat, Screen-shot, Screen-sharing, Whiteboard, Voice mail, Co-browse 2.0.2
Cisco IP Communicator Windows Closed Proprietary SCCP (Skinny), SIP, TFTP sRTP 7.0.3 (Aug 2009)
CommuniGate Pro Linux/BSD, Solaris, Mac OS X, Windows, AIX, HPUX Closed Proprietary SIP, XIMSS Protocol TLS/SSL and SASL Multi-party conference, IM, Video, VideoMail, Presence 5.2.x (October-2008)
CounterPath X-Lite Linux, Mac OS, Windows Freeware / Closed Proprietary SIP, STUN, ICE Template:Unk IM, single login account, for Windows and Mac also Conferencing, Video and SIMPLE based presence] Windows / Mac OS: 3.0 / Linux: 2.0
Ekiga Linux, (Beta Windows support), OpenSolaris GPL / Free software SIP, H.323, H.263, H.264/MPEG-4 AVC, STUN, Theora, Zeroconf No Video, IM, LDAP, Call Forwarding, Call Transfer Template:Latest stable software release/Ekiga
Empathy Linux GPL / Free software SIP, XMPP (Jingle), ICE (STUN/TURN), Zeroconf No IM, multi-user A/V[citation needed], collaborative applications 2.28.2 (2009-12-14)
Gizmo5 Linux, Mac OS X, Windows, Windows Mobile Phone, Blackberry, Nokia, PDA Java Freeware / Closed Proprietary SIP, XMPP SRTP Record Calls, Forward Calls, MSN IM, Windows Live Talk, Google Talk, Talk with Yahoo, Messenger, XMPP Windows: 4.0.5.395 (23 Sep 2009), Mac OS: 4.0.0.269 (23 Sep 2009)
Google Talk Windows Closed Proprietary (using libjingle) XMPP Template:Unk Video, chat, file transfer, voicemail, mail via "GMail Integration" 1.0.0.104
iChat Mac OS X Closed Proprietary SIP AIM ICQ XMPP H263 H264 Template:Unk Integrated, PBX independent January 2007
KPhone Linux (KDE) GPL / Free software SIP, STUN, NAPTR/SRV SRTP Video, voice, IM, external Sessions, IPv6 support for UDP 1.2 (November 2008)
Linphone Linux, Windows GPL / Free software SIP Template:Unk Video, IM, STUN, IPv6 3.0.0 (13 Oct 2008)
Lotus Sametime Linux, Mac OS X, Windows Closed Proprietary SIP, SIMPLE, T.120 and H.323 Template:Unk 8.0.2 (October 2009)
Mercuro IMS Client Windows XP/Vista/Mobile Closed Proprietary SIP, XCAP, MSRP, NAPTR/SRV, Dhcp, RTP, H263, H264 TLS-Ipsec Voice/Video Calls, Presence, Instant messaging, File transfer, Remote Contact Storage 4.0
MindSpring Windows 2000/XP Freeware / Closed Proprietary SIP, XMPP Template:Unk Instant messaging, PC to phone, file transfer 2.0
Minisip Linux, Windows XP/2000/Mobile GPL / LGPL / Free software SIP SRTP, TLS, key exchange via MIKEY (DH, PSK, PKE), end to end encryption Video, IM Conferencing
Mirial Softphone (Mirial s.u.r.l.) Windows 2000/XP/2003/Vista, Mac OS X (x86) Closed Proprietary SIP, H.323, RTSP DTLS-SRTP H.264 Full-HD 1080p video rx/tx, Two independent lines supporting Call Control and 3-Party videoconference in Continuous Presence, G.722.1/C wideband audio, Call recording/export, DV/HDMI/Component capture, Presentation (H.239, RFC-4796), Encryption, Far End Camera Control, GPU accel (D3D and OpenGL) 7.0 (June 11, 2009)
Mumble Linux, Mac OS X, Windows BSD / GPLv2 CELT / Speex TLS Chat with (limited) embedded HTML, ACLs for user management, Customizable In-Game Overlay, Directional Audio, Plugin Support, Nested Channels 1.2.1 (January 7, 2010)
OctroTalk Symbian, Windows Mobile, Windows Shareware / Closed Proprietary SIP, (XMPP, STUN, ICE, Libjingle and RTP (media) TLS and SASL VoIP, SIP calling, Video conference/chat, live video streaming, P2P file transfer, instant messaging 2.14 (February 17, 2009)
PhoneGaim Linux (Linspire), Windows XP/2000 GPL / Free software SIP Template:Unk
QuteCom Linux, Mac OS X, Windows XP/2000 GPL / Free software SIP SRTP, but key exchange via Everbee key Exchange which is not a Standard) Video, IM (MSN, AIM, ICQ, Yahoo!, XMPP, Google Talk), voicemail, wengo to phone, conferencing. Template:Latest stable software release/QuteCom
Revation Communicator Windows 2000/XP/Vista/7 Closed Proprietary SIP/SIMPLE TLS and SRTP Secure Multi-Party Chat/Instant Messaging, Presence, VoIP, Video, File Transfer, Desktop Sharing 4.3 (August 2009)
SFLphone Linux GPL3 / Free software SIP,RTP, IAX2,STUN, SRV No Gnome/KDE client, address book, multiple accounts, unlimited number of calls, call transfer, hold/unhold 0.9.5 (May 22, 2009)
SightSpeed Mac OS X, Windows Freeware / Closed Proprietary SIP,RTP,Proprietary P2P protocol Template:Unk Video, voicemail, phone in, phone out, multiparty calling, conference recording, text messaging, NAT traversal, video mail 6.0
SIP Communicator Linux, Mac OS, Windows XP/2000 (all java supported) LGPL / Free software SIP/SIMPLE, XMPP Secure calls with zRTP is planned for 1.0-rc1 Text messaging, audio/video telephony, basic IPv6 Template:Latest stable software release/SIP Communicator Template:Latest preview software release/SIP Communicator
Skype Linux, Mac OS X, Windows 2000/XP/Vista/7/Mobile, BREW, iPhone, PSP Freeware / Closed Proprietary Proprietary P2P protocol Yes Conferencing, video, file transfer, voicemail, Skype to phone, phone to Skype, additional P2P extensions (games, whiteboard, etc...) Template:Latest stable release/Skype
TeamSpeak Linux, Windows, Mac OS X (unofficial) Freeware Closed / Proprietary No Conferencing 2.0.32.60
Telephone Mac OS X 10.5 BSD / Free Software SIP, STUN, ICE No Address Book integration 0.14.0
Tokbox Mac OS X, Windows XP/2000/Vista Freeware / Closed Proprietary Template:Unk Template:Unk Video calling, video conferencing, chat, IM (MSN, AIM, Yahoo!, Google Talk) Template:Unk
Tpad Windows 2000/XP/Vista Freeware / Closed Proprietary SIP, STUN Template:Unk Call Forwarding, PC to PSTN, PSTN to PC, Voicemail to email 3.0.1
Twinkle Linux GPL / Free software SIP SRTP, ZRTP Template:Latest stable software release/Twinkle
Vbuzzer Windows 2000/XP/Vista Freeware / Closed Proprietary SIP TLS IM (MSN), voicemail, personalized voice greeting. 2.0.282
Ventrilo Mac OS X, Windows Freeware / Closed Proprietary No Conferencing, chat, text-to-speech 3.0.5
VoiceChatter Linux, Mac OS X, Windows GPL3 / Free software Template:Unk No Template:Unk 1.3.0
Voice Operator Panel Windows 2000/XP/Vista Closed Proprietary SIP, RTP Template:Unk Call forwarding, Call transfer, Call recording, Presence, Outlook integration, Windows Messenger/MSN/Live integration, CRM, Built-in web browser & e-mailer, LDAP, APS. 1.3.2
VoxOx Windows, Mac OS X XP/Vista/7 Freeware / GPL3 SIP, XMPP SRTP Calling, conferencing, video, virtual personal assistant, file transfer, voicemail, text message, fax, email, record calls, forward calls - Universal Communicator with support for: AIM, Windows Live, Yahoo Messenger, ICQ, Jabber, Google Talk, Facebook, MySpace, Twitter, Skype 2.0.6
Windows Live Messenger (Windows Live Call) Windows Freeware / Closed Proprietary Template:Unk
Yahoo! Messenger Mac OS (8, 9, X), Windows, (Linux/FreeBSD version not VoIP capable) Freeware / Closed Proprietary SIP (using TLS) and RTP (media) Template:Unk Video, file transfer, PC to phone, phone to PC
Zfone Linux, Mac OS X, Windows Freeware / Viewable source Proprietary (includes time bomb provision) SIP, RTP SRTP, ZRTP Beta 2008-09-04 (Linux 0.9.224), (Mac OS 0.9.246), (Windows 0.9.206)

Mobile phones

Program Operating systems Licence Protocols/based upon/compatible with Encryption Other capabilities Latest release
fring Symbian 8.x and 9.x, Windows Mobile 5 and 6, iPhone, Maemo, Android Proprietary SIP to publicly routable servers only, not to non-publicly routable SIP Servers, Skype, Google Talk, MSN Messenger, Twitter, ICQ, AIM, Yahoo  ?E  ?OC 3.37
Gizmo5 Mobile Windows Mobile (non-native, only through SJPhone), Motorola, Nokia, Blackberry, Java PDA's, Sony-Ericsson, Samsung Freeware SIP, AIM, iChat, XMPP, MSN, Yahoo Yes Online Phone over Edge, UMTS, 3G, Call Land and Cell phone, Voicemail, AOL, iChat, XMPP, Yahoo! Messenger, Windows Live 1.15 (as of May '08)
Jajah Mobile Web Symbian OS, Windows Mobile (version unknown) web based service, no download[1]  ?E  ?OC
Nimbuzz! J2ME, S60, Windows Mobile (version unknown), iPhone Freeware / Closed Proprietary Google Talk, Skype, SIP to publicly routable servers only, not to non-publicly routable SIP Servers, AIM, Windows Live Messenger, Yahoo! Instant Messenger, XMPP  ?E  ?OC 2.0 (2009.06.24)
Skype BREW, Windows Mobile, iPhone, Maemo Freeware / Closed Proprietary Proprietary P2P protocol Yes Video, file transfer, voicemail, Skype to phone, phone to Skype, additional P2P extensions (games, whiteboard, etc...) Template:Latest stable release/Skype
Truphone Nokia-Symbian, iPhone, Android, Blackberry Freeware / Proprietary SIP  ?E WiFi VoIP out & in, SMS over IP, call-through & call-back, connection management, provisioning 4.0 Symbian, 1.11.1 iPhone
Vopium Symbian, J2ME, Android, BlackBerry RIM, iPhone, Windows Mobile 2003 SE and higher (selected models) Freeware / Proprietary SIP, GSM  ?E WiFi VoIP, GSM call-trough, SMS over IP, least cost routing, Synchronisation/back-up of mobile contacts and calendar 2.0
Windows Mobile 6 Windows Mobile 6 Professional/Standard Proprietary SIP to publicly and non-publicly routable servers  ?E WiFi Mobile VoIP 6.1
X-PRO for Pocket PC Windows Mobile 2003 (earlier versions support Windows PocketPC 2002) Proprietary, discontinued in April 2007[2] SIP  ?E Supported devices: AudioVox Maestro, Compaq/HP iPAQ: 365x, 37xx, 385x, 395x, hx4700, Dell Axim X51, X51v, Toshiba e550, e570. iPAQ 545x and Toshiba e7xx are not supported.[3] 2.2

Frameworks and libraries

Program Operating systems Licence Protocols/based upon/compatible with Encryption Other capabilities Key and target markets Latest release
Tapioca Linux GPL / Free software Telepathy (software)  ?E  ?OC 0.3.9 (June 12, 2006)
Telepathy/Farsight Linux, Mac OS X, Windows LGPL / Free software SIP, XMPP (Jingle)), ICE (STUN/TURN), UPnP None yet Multi-user A/V conferencing, IM, collaborative applications Mobile devices (Maemo), Linux Desktop spec 0.17.8 (24-Jul-2008)

Server software

Program Operating systems Licence Protocols/based upon/compatible with Encryption Other capabilities Key and target markets Latest release
3CX Phone System Microsoft Windows Closed SIP TLS,SRTP Voice and Video IP telephony, Voice and Video conferencing, voice mail and instant messaging 25,000 - 50,000 users 8.0 (Oct 2009)
AS5300 Linux, Windows Server 2003 Closed SIP, UNIStim, MLPP TLS,

SRTP, SDESC

Voice and Video IP telephony, Voice and Video conferencing, voice mail and instant messaging 1,000 - 25,000 users 1.0 (Jan 2008)
Asterisk PBX Linux/BSD, Mac OS X, Solaris GPL / Free software SIP, H.323, IAX   VoIP Gateway, voicemail, basic accounting (can be expanded by interface with ODBC-compliant database), conferencing, hot-desking, IVR trees with conditional logic, call queuing, automated call distribution Enthusiasts, developers, enterprise users (capacity dependent on server design, scalable across multiple servers) 1.6.1.11 (December 2009)
CommuniGate Pro Linux/BSD, Mac OS X, Windows, Solaris, HPUX, AIX Proprietary SIP, XMPP SSL, TLS, SIP Registrar/Proxy, Authentication, Diameter, RADIUS, ENUM, and many others... Mobile Operators, ISP's, and SaaS providers 5.2.x October 2008
FreeSWITCH PBX SoftPhone Linux/BSD, Mac OS X, Solaris, Windows Mozilla Public License / Free software / Open source SIP, NAT-PMP, STUN, SIMPLE, XMPP, Google Talk (Jingle)), IAX, H.323, MRCP, RSS, Skype

TLS, SRTP, ZRTP

Recording, Voicemail, Conferencing, RADIUS, ENUM, IM Proxy, Streaming, Media gateway, Soft-PBX, IVR (modular) Large soft-switch users, home PBX users, softphone users 1.0.4 (August 6, 2009)
GNU Gatekeeper Linux/FreeBSD, Mac OS X, Windows XP/2000 GPLv2 / Free software H.323 H.235 H.460.18 firewall traversal, Routing, Accounting video conferencing, VoIP carriers large and small 2.3.1, November 26, 2009
Mumble Linux/BSD, Mac OS X, Windows BSD / GPLv2 CELT / Speex TLS Chat with (limited) embedded HTML, ACLs for user management, Customizable In-Game Overlay, Directional Audio, Plugin Support, Nested Channels Individuals to Small and medium enterprise (25-256 users) 1.2.0 (December 11, 2009)
Mysipswitch Linux BSD / Free software / Open source SIP, Ajax SSL SIP proxy server which allows the use of multiple SIP accounts with a single SIP login Individuals August 2007
Objectworld UC Server Windows XP/2003/2008 Closed Proprietary SIP IP PBX, personal assistants, IVR, automated phone provisioning, fax server, unified messaging, Outlook, Exchange and Lotus Domino/Notes integration, conferencing, outbound dialing Small and medium enterprise (25-2000 users) 4.4.2 (May 2009)
Kamailio/OpenSIPS (formerly known as OpenSER) Linux/BSD, Solaris GPL / Free software SIP, XMPP SIP Registrar/Proxy, Authentication, Diameter, RADIUS, ENUM, least-cost-routing and many others. SIP Service Providers 1.4.3
pbxnsip Linux/BSD, Mac OS X, Windows Closed Proprietary SIP SRTP IP PBX, presence indication, IVR, automated phone provisioning, fax server, unified messaging, Outlook, Exchange integration, conferencing, outbound dialing Small and medium enterprise (25-256 users) 3.3.1.3177 (April 2009)
SIP Express Router (SER) Linux/BSD, 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 L-GPL / Open source Native SIP Call Control HTTPS, TLS Full redundancy (HA), plug & play management including phones and gateways, fully featured Enterprises between 200 and 10,000 users, multi-site 4.01, June 2009
Yate Linux/BSD, Windows GPL SIP, H.323, IAX2, Jingle, MGCP SRTP RADIUS, ENUM, conferencing, voicemail, IM, ACD, PBX, IVR, FAX, T.38, LCR, HA Home users to Large Carriers 2.1, November 2009

See also

References

de:VoIP-Softwarevergleich

it:Confronto tra software di VoIP pt:Anexo:Comparação de software VoIP ru:Сравнение программ для IP-телефонии zh:VoIP軟體的比較

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