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| <!-- capabilities -->
| <!-- capabilities -->
| [[Development stage#Beta|Beta]] 2008-09-04 ([[Linux]] 0.9.224), ([[Mac OS]] 0.9.246), ([[Microsoft Windows|Windows]] 0.9.206)
| [[Development stage#Beta|Beta]] 2008-09-04 ([[Linux]] 0.9.224), ([[Mac OS]] 0.9.246), ([[Microsoft Windows|Windows]] 0.9.206)
|-
!{{rh}}| [[Zoiper]]
| [[Linux]], [[Mac OS X]], [[Microsoft Windows|Windows]], [[Android (operating system)|Android]], [[iPhone]], [[Windows Mobile]], [[Solaris (operating system)|Solaris]]
| {{proprietary}}
| freeware / paid
| [[Session Initiation Protocol|SIP]], [[IAX]], [[Real-time Transport Protocol|RTP]], [[SRTP]], [[RTSP]], [[RTCP]], [[SIMPLE]], [[XMPP]], [[STUN]], [[T.38]]
| [[Speex]], [[G.711]], [[iLBC]], [[G.729]], [[H.264]], [[h263+]], [[VP8]]
| {{Yes|[[Transport Layer Security|TLS]], [[Secure Real-time Transport Protocol|SRTP]]}}
| Video: 2,
Audio: unlimited
| Outlook & ThunderBird integration, LDAP, Click to Dial, Chat, BLF, Presence, Fax, KPML, call recording,
| Windows: August 2013
|}
|}
(a) [[Session Initiation Protocol|SIP]] users can connect to the Skype network using alternate software/hardware, but the Skype software does not support it directly<ref name="skypesip"/>
(a) [[Session Initiation Protocol|SIP]] users can connect to the Skype network using alternate software/hardware, but the Skype software does not support it directly<ref name="skypesip"/>
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| VoIP over 3G/4G/LTE and Wifi, SMS, Group chat, Photo sharing, Location sharing, virtual phone numbers
| VoIP over 3G/4G/LTE and Wifi, SMS, Group chat, Photo sharing, Location sharing, virtual phone numbers
|{{Latest stable software release/Yuilop}}
|{{Latest stable software release/Yuilop}}
|-
| [[Zoiper]]
| [[Android (operating system)|Android]], [[iOS]], [[Windows Phone]]
| {{proprietary|[[Freeware]]}}
| {{No}}
| [[SIP]], [[IAX]]
| [[Speex]], [[G.711]], [[iLBC]], [[G.729]], [[H.264]], [[h263+]], [[VP8]]
| {{No}}
|
|August 2013
|}
|}



Revision as of 13:48, 18 September 2013

This is a comparison of Voice over IP (VoIP) software used to conduct telephone-like voice conversations across Internet Protocol (IP) based networks. 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, e.g. have a PSTN phone number in a New York area code ring in Tokyo.

For businesses, VoIP obviates separate voice and data pipelines, channelling both types of traffic through the IP network while giving the telephony user a range of advanced capabilities.

Softphones are client devices for making and receiving voice and video calls 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, though the network (but not the official Skype client software) also supports SIP clients.[1] 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.

Some entries below are Web-based VoIP; most are standalone applications.

General softphone clients

Program Operating systems License Costs Protocols Codecs Encryption Max conference peers Other capabilities Latest release
AOL Instant Messenger Mac OS, Windows Proprietary Free SIP (Windows ver. only), RTP Un­known Un­known Un­known Video, file transfer, PC to phone, phone to PC Template:Latest stable software release/AOL Instant Messenger
Avaya Application Server 5300 Soft Client Windows Proprietary ? SIP, RTP, Un­known TLS, SRTP Un­known 2.0 (2010)
Blink Linux, Mac OS, Windows GPL Free ICE, SIP, MSRP, RFB (VNC) Un­known TLS, SRTP Unlimited IM, File Transfer, Desktop Sharing(only Mac OS), Multi-party conference, Wideband 1.8.1 (April 20, 2012)
Bria by CounterPath Corporation Windows, Mac OS, Linux (Voice calling only) Proprietary ? SIP / SIMPLE, XMPP, STUN, ICE G.722 wideband, G.711a, G.711u, iLBC, G.729a, G.729ab, H.263, H.264/MPEG-4 AVC, iLBC, Speex, SILK, GSM, VP8, H.264, OPUS TLS, SRTP 6 party audio; 3 party video Voice and HD (1280 x 720p) Video calling; Multiple Account Integration; Address Book Support (Mac and Windows); Company Chat Rooms; USB Support; Troubleshooting Assistant; Workgroups; Call Recording and Conferencing 3.4.3 (October 2012)
Cisco IP Communicator Windows, Android Proprietary ? SCCP (Skinny), SIP, TFTP G.722 wideband, G.711a, G.711u, iLBC, G.729a, G.729ab SRTP Un­known Call Recording, Silent Monitoring, Multiple lines and directory numbers, Configurable speed dial, Calling name and number display, Call Waiting, Call Forward, Call Transfer, Three-Way Calling (conference), Call Park, Call Pickup, Redial, Hold, Barge, Callback, Extension Mobility, Message waiting indicator, iDivert, Meet Me conferencing, Group Pickup, Do Not Disturb 7.0.6 (Jan 2011)
Ekiga Linux, Windows, OpenSolaris GPL Free SIP, H.323, STUN, Zeroconf, XMPP, RTP H.263, H.264/MPEG-4 AVC, Theora, iLBC, Speex, SILK, GSM, ... No Un­known Video, IM, LDAP, Call Forwarding, Call Transfer, Auto-answering, PC to phone, phone to PC, Multiple accounts, USP support, Message waiting indicator, SIMPLE-based presence etc. Template:Latest stable software release/Ekiga
Empathy Linux GPL Free SIP, XMPP (Jingle), ICE (STUN/TURN), Zeroconf Un­known No Un­known IM, multi-user A/V[citation needed], collaborative applications 45.0[2] (20 September 2023; 15 months ago (2023-09-20)) [±]
Eyeball Chat Windows Proprietary Free SIP, STUN, ICE, XMPP Un­known Yes 5[3] IM, Conferencing, Voice, Video and SIMPLE based presence Windows 3.2 (2009)
eyeBeam by CounterPath Corporation Windows Proprietary ? SIP / SIMPLE Un­known TLS, SRTP 6 party audio; 3 party video Voice and Video calling; IM; Import Microsoft Outlook Contacts; USB Support; Call Recording and Conferencing 1.5.20.1 (March 2010)
Gizmo5 Linux, Mac OS X, Windows, Windows Mobile Phone, Blackberry, Nokia, PDA Java Proprietary Free SIP, XMPP Un­known SRTP Un­known 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 Linux, Windows, Mac OS X Proprietary (using libjingle) Free XMPP Un­known ZRTP Un­known Video, chat, file transfer, voicemail, mail via "GMail Integration" Windows Plugin:

3.19.1.13088 (May 14, 2013; 11 years ago (2013-05-14)) [±]

IBM Sametime Linux, Mac OS X, Windows, mobile Proprietary ? SIP, SIMPLE, T.120 H.323 TLS Un­known IM, File transfer, Voice, Presence, Server stored contact list, HTTP tunneling, plugins, embedable in Lotus Notes[4] 8.5.2 (08. May 2011)
iCall Linux, Mac OS X, Windows, iOS, Android Proprietary Free SIP AIM ICQ XMPP Speex, CELT, WebM TLS ZRTP Unlimited Video, file transfer, PC to phone, phone to PC, IM (MSN, AIM, ICQ, Yahoo!, XMPP, Google Talk), Voicemail 7.1.522
Messages Mac OS X Proprietary ? SIP AIM ICQ XMPP H263, H264 Un­known Un­known Integrated, PBX independent 7.0 July 25, 2012; 12 years ago (2012-07-25)
Jitsi Linux, Mac OS, Windows XP/2000 (all java supported) LGPL Free SIP/SIMPLE, XMPP/Jingle STUN ICE, TURN SILK, G.722, Speex, Opus, G.711 (PCMU/PCMA), iLBC, GSM, G.729, H.264, H.263 ZRTP, SRTP, TLS Un­known Text messaging, audio/video telephony, IPv6 (often broken,[5] P2P not supported[6]), call recording, 64-bit 2.10 (build.5550) (February 5, 2017; 7 years ago (2017-02-05)) [±]
KPhone Linux (KDE) GPL Free SIP, STUN, NAPTR/SRV Un­known SRTP Un­known Video, voice, IM, external Sessions, IPv6 support for UDP 1.2 (November 2008)
Linphone Linux, Windows, Mac OS, Android, iPhone, BlackBerry GPL Free SIP Un­known TLS, SRTP, ZRTP Un­known Video, IM, STUN, IPv6 (disables IPv4 support when enabled, P2P supported only by version 3.5.1-2) 3.6.0 (Jun 12, 2013)
MicroSIP Windows GPL Free SIP, STUN, ICE, SIMPLE Speex, iLBC, GSM, G.711, G.722, G.729, SILK, Linear PCM TLS, SRTP Un­known Video, voice, IM and Presence 3.3.20 (Jun 20, 2013)
Mirial Softphone (Mirial s.u.r.l.) Windows 2000/XP/2003/Vista/7 (including 64bit versions), Mac OS X (x86) Proprietary ? SIP, RTSP H.323 DTLS-SRTP Un­known 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) 7.0.24 (May 26, 2010)
Mumble Linux, Mac OS X, iOS, Windows, Android BSD Free Un­known CELT, Speex, Opus (codec) TLS and OCB-AES128 No max (limited only by server bandwidth and memory) Chat with (limited) embedded HTML, Automatic Gain Control, Access Control Lists for user management, Customizable In-Game Overlay, Directional Audio, Plugin Support, Nested Channels, Echo cancellation, Logitech G15 support 1.2.4 (June, 2013)
Nymgo Windows, Android, iOS Proprietary Free SIP, RTP and RTCP Un­known Yes No Address Book integration, Call recording/export, Mute, On Hold, Caller ID definition 4.2.9 (March, 2013)
oovoo Mac OS X, iOS, Windows, Android Proprietary Free Un­known Un­known No 12 Mobile or landline Phone Calls, Video chat, Video embed a video chat in website, Full Screen Mode, Video Call Recording, Send a video greeting to multiple people at once, Screen Sharing, Video Call Add up to six phones, Instant Messaging Message up to 12 friends,Send Files up to 25 MB, Call Me Button, Privacy Controls, Social Networking 3.5.3.22 (2012)
Phoner Windows Proprietary Free SIP, TAPI, CAPI Un­known TLS, SRTP, ZRTP 8 Conferencing, call redirection, call recording 3.23 (5 March 2021; 3 years ago (2021-03-05)) [±][7]
PhonerLite Windows Proprietary Free SIP Un­known TLS, SRTP, ZRTP 8 Conferencing, call redirection, call recording 3.27 (11 November 2024; 45 days ago (2024-11-11)) [±][8]
QuteCom Linux, Mac OS X, Windows XP/2000 GPL Free SIP Un­known SRTP, but key exchange via Everbee key Exchange which is not a Standard) Un­known Video, IM (MSN, AIM, ICQ, Yahoo!, XMPP, Google Talk), voicemail, wengo to phone, conferencing. 2.2.1 (22 June 2011; 13 years ago (2011-06-22)[9]) [±]
Revation Communicator Windows 2000/XP/Vista/7 Proprietary ? Proprietary G.722, G.711, VP8, Opus TLS and SRTP No max (limited by server mixing services) Secure Multi-Party Chat/Instant Messaging, Presence, VoIP, Video, File Transfer, Desktop Sharing 6.3 (July 2013)
SFLphone Linux GPL3 Free SIP, RTP, IAX2, STUN per account, SRV Un­known Voice encryption (SRTP), Signaling encryption (TLS), Multiple realms authentication mechanism Un­known Gnome/KDE client, address book, multiple accounts, unlimited number of calls, call transfer, call hold/unhold, call recording, Multi-way conferencing 1.2.0 (July, 2012)
SightSpeed Mac OS X, Windows Proprietary Free SIP, RTP, Proprietary P2P protocol Un­known Un­known Un­known Video, voicemail, phone in, phone out, multiparty calling, conference recording, text messaging, NAT traversal, video mail 6.0 (2007)
Skype Linux, Mac OS X, Windows 2000/XP/Vista/7/Mobile (no longer supported), BREW, Android, iPhone, PSP Proprietary Free Proprietary P2P protocol (a) SILK Yes, but see this article for more details in this regard.(no longer secure) 25 starting with version 3.6.0.216. 10 with 2.x Conferencing, video, file transfer, voicemail, Skype to phone, phone to Skype, additional P2P extensions (games, whiteboard, etc...); depending on platform.
Windows, UWP15.134.3202.0 / 16 December 2024; 10 days ago (2024-12-16)[10][11][12]
Windows, desktop8.134.0.202 / 16 December 2024; 10 days ago (2024-12-16)[10][11]
macOS8.134.0.202 / 16 December 2024; 10 days ago (2024-12-16)[10][11]
Linux8.134.0.202 / 16 December 2024; 10 days ago (2024-12-16)[10][13]
Android8.134.0.202 / 11 December 2024; 15 days ago (2024-12-11)[14][15][16]
iOS8.134.0.202 / 16 December 2024; 10 days ago (2024-12-16)[14][17]
Spikko Windows 2000/XP/Vista/7/Mobile, iPhone, Proprietary Free SIP Un­known Yes 8 Conferencing, voicemail, PC to phone, phone to PC, Free international phone numbers, address book integration; Dec 2010
TeamViewer Linux, Windows, Mac OS X, iOS, Android[18] Proprietary Free (personal use only) Un­known Un­known AES256 Un­known Un­known
Windows (desktop app)15.61.3 / 17 December 2024; 9 days ago (2024-12-17)[19]
macOS15.61.3 / 17 December 2024; 9 days ago (2024-12-17)[20]
Linux15.61.3 / 17 December 2024; 9 days ago (2024-12-17)[21]
Android/ChromeOS15.61.628 / 17 December 2024; 9 days ago (2024-12-17)[22][23]
iOS15.61.1 / 17 December 2024; 9 days ago (2024-12-17)[24]
Windows (UWP app)15.53.6 / 15 April 2024; 8 months ago (2024-04-15)[25]
TeamSpeak Linux, Windows, Mac OS X, FreeBSD, Android, iOS Proprietary Free Un­known CELT, Speex, Opus Yes 32 unlicensed / 512 with Non-Profit License / 2000 Simultaneous Server Conferencing with Tabs, 3D Sound Effects, Scalable Permissions System, Firewall Friendly File Transfers, In-Game Overlay for DirectX & OpenGL Games, Global Public Server List, Plugin System 3.0.11
Telephone Mac OS X 10.5 BSD Free SIP, STUN, ICE Un­known No Un­known Address Book integration 1.0.4 (March 6, 2012; 12 years ago (2012-03-06))
Tokbox Mac OS X, Windows XP/2000/Vista Proprietary Free Un­known Un­known Un­known Un­known Video calling, video conferencing, chat, IM (MSN, AIM, Yahoo!, Google Talk) Un­known
Toktumi Unlimited / Line2 Pro Windows XP/Vista/7, Mac OS X, iOS, Android Proprietary Free Proprietary with SIP core Un­known Un­known 20 Conferencing, voicemail, caller ID, call-waiting, address book integration; auto-attendant, call-forwarding Windows: August 2010 / OS X: October 2010
Tru App Windows 2000/XP/Vista/7, Mac OS X, Linux
iOS, Android, Symbian, BlackBerry OS,
Proprietary Free SIP, XMPP Un­known Un­known Un­known Chat, file transfer, voicemail, inbound numbers, integration with GTalk, Microsoft Live, Skype
Twinkle Linux GPL Free SIP Un­known SRTP, ZRTP Un­known Conferencing, chat, file transfer, Firefox integration, call redirection, voicemail, support of VoIP-to-Phone services 1.10.3 (February 19, 2022; 2 years ago (2022-02-19)) [±]
Vbuzzer Windows 2000/XP/Vista Proprietary Free SIP Un­known TLS Un­known IM (MSN), voicemail, personalized voice greeting. 2.8.002
Ventrilo Mac OS X, Windows Proprietary Free Un­known Un­known No 8 Conferencing, chat, text-to-speech 3.0.8
Voice Operator Panel Windows 2000/XP/Vista Proprietary ? SIP, RTP Un­known Un­known Un­known 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
X-Lite Mac OS, Windows, (Linux) Proprietary Free SIP, STUN, ICE Un­known No Un­known IM, single login account, for Windows and Mac also Conferencing, Video and SIMPLE based presence Windows and Mac OS: 5 (2012). Linux: Discontinued.
Yahoo! Messenger Mac OS (8, 9, X), Windows, (Linux/FreeBSD version not VoIP capable) Proprietary Free SIP (using TLS) and RTP (media) Un­known Un­known Un­known Video, file transfer, PC to phone, phone to PC Windows: 11.5.0.228 / May 31, 2012; 12 years ago (2012-05-31)
Mac: 3.0.1 / July 20, 2011; 13 years ago (2011-07-20)
Linux: 1.0.6 / September 2003; 21 years ago (2003-09)
SunOS 5.7: 0.99.17-1 / September 2003; 21 years ago (2003-09)
Solaris 8: 1.0.4 / September 2003; 21 years ago (2003-09)
FreeBSD 4/5: 1.0.4 / September 2003; 21 years ago (2003-09) iOS: 2.2.6/ July 12, 2012; 12 years ago (2012-07-12)
Yate Client Linux, Mac OS, Windows GPL Free SIP, IAX, XMPP, H.323 G.711a, G.711u, GSM 06.10, iLBC, Speex, G.723, G.726, G.728, G.729 Un­known Un­known 4.3 2013-01
Zfone Linux, Mac OS X, Windows Viewable source (includes time bomb provision) SIP, RTP Un­known SRTP, ZRTP Un­known Beta 2008-09-04 (Linux 0.9.224), (Mac OS 0.9.246), (Windows 0.9.206)
Zoiper Linux, Mac OS X, Windows, Android, iPhone, Windows Mobile, Solaris Proprietary freeware / paid SIP, IAX, RTP, SRTP, RTSP, RTCP, SIMPLE, XMPP, STUN, T.38 Speex, G.711, iLBC, G.729, H.264, h263+, VP8 TLS, SRTP Video: 2,

Audio: unlimited

Outlook & ThunderBird integration, LDAP, Click to Dial, Chat, BLF, Presence, Fax, KPML, call recording, Windows: August 2013

(a) SIP users can connect to the Skype network using alternate software/hardware, but the Skype software does not support it directly[1]

Mobile phones

For mobile VoIP clients:

Program Operating systems License Open Source Protocols Codecs Encryption Other capabilities Latest release
Acrobits Groundwire Android v2.2+, iOS v4.3+ Proprietary No SIP SIMPLE G.711, G.722, iLBC, GSM, G.729 TLS, SRTP, ZRTP Groundwire voip over Wi-Fi or 3G, supports audio codecs. Multi line, call conferencing, transfer and attended transfer, voicemail.

iOS only - Push Notifications, video, number rewriting, address book matching, sms for betamax providers and pennytel

Groundwire (iOS) 2.4.5, Groundwire (Android) 3.21
Acrobits Softphone Android v2.2+, iOS v4.3+ Proprietary No SIP G.711, G.722, iLBC, GSM, G.729 TLS, SRTP, ZRTP VOIP over Wi-Fi or 3G iOS only - Push Notifications, video, number rewriting, address book matching, sms for betamax providers and pennytel Acrobits Softphone (iOS) 5.2, Acrobits Softphone (Android) 3.20
Bria by CounterPath Corporation iOS 4.3+, Android v2.2+ Proprietary No SIP SIMPLE G.711, G.722, iLBC, GSM, SILK, G.729, H.264 TLS, SRTP VoIP over Wi-Fi or 3G/4G; Audio codecs ; Multiple languages; Option to purchase Video Calls add-on with H.264 codec and Messaging and Presence add-on which uses XMPP and SIP protocols. 2.1.3 (iOS), 2.0.3 (Android)
CSipSimple Android v1.6+ GPL Yes SIP G.711, Speex, GSM, iLBC, G.722, AMR, iSAC, SILK, G.726, G.722.1, Opus, Codec2, G.726 SRTP, ZRTP, TLS VoIP over Wi-Fi or mobile data; Conference; Android integration with filtering/rewriting rules 0.04-04 (19 September 2012)
Gizmo5 Mobile Windows Mobile (non-native, only through SJPhone), Motorola, Nokia, Blackberry, Java PDA's, Sony Ericsson, Samsung Freeware No SIP, AIM, iChat, XMPP, MSN, Yahoo Un­known Yes Online Phone over EDGE, UMTS, 3G, Call Land and Cell phone, Voicemail, AOL, iChat, XMPP, Yahoo! Messenger, Windows Live. On April 3, 2011 Google shut down Gizmo5 and recommended users to use Google Talk as an alternative. 1.15 (as of May '08)
iCall Mobile iOS v4.3+ Freeware / Proprietary No SIP AIM ICQ XMPP Speex, CELT, WebM TLS, ZRTP VoIP over Wi-Fi or 3G, SMS, Voicemail, AOL, Facebook, XMPP, Yahoo! Messenger, Windows Live 2.0.1 (as of Apr '12)
Jajah Mobile Web Symbian OS, Windows Mobile (version unknown) web based service, Call back,no download[26] No Un­known Un­known
Line2 iOS, Android Freeware / Proprietary No Proprietary with SIP core Un­known Un­known Tri-mode calling (cellular, 3G/4G data, Wi-Fi), SMS over IP, visual voicemail, 20-person conference calls, auto-attendant, call-forwarding 1.0.4 Android, 3.2.1 iOS
Sipdroid Android GPL Yes SIP Un­known Un­known Uses Wi-Fi, 3G or EDGE 2.7
Tango by TangoME Inc., iOS, Android, Microsoft Windows, OS X, Windows Phone Freeware / Proprietary Un­known Un­known Un­known Un­known Wi-Fi VoIP out & in, SMS over IP, call-through & call-back, Voice over IP, Instant messaging, Videoconferencing Un­known
Truphone Nokia-Symbian, iOS, Android, Blackberry Freeware / Proprietary No SIP Un­known Un­known Wi-Fi VoIP out & in, SMS over IP, call-through & call-back, connection management, provisioning Symbian 4.0, iOS 1.11.1
Vopium Symbian, Java ME, Android, BlackBerry RIM, iOS, Windows Mobile 2003 SE and higher Freeware / Proprietary No SIP, MSN, Skype, Yahoo, AOL, ICQ, Google Talk, Facebook & Twitter GSM Un­known Wi-Fi 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 No SIP to publicly and non-publicly routable servers Un­known Un­known Wi-Fi Mobile VoIP 6.1
X-PRO for Pocket PC Windows Mobile 2003 (earlier versions support Windows PocketPC 2002) Proprietary, discontinued in April 2007[27] No SIP Un­known Un­known 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.[28] 2.2
Yuilop Android, iOS, Windows Phone, BlackBerry OS Freeware No XMPP, RTP iLBC TLS VoIP over 3G/4G/LTE and Wifi, SMS, Group chat, Photo sharing, Location sharing, virtual phone numbers iOS 2.4 (November 26, 2014; 10 years ago (2014-11-26)[29]) [±]

Android 2.0.2 (February 12, 2014; 10 years ago (2014-02-12)) [±]
Windows Phone 7.x 1.0.1.7 (September 12, 2013; 11 years ago (2013-09-12)) [±]
Windows Phone 8.x 1.0.0.4 (September 18, 2013; 11 years ago (2013-09-18)) [±]
BlackBerry OS 1.0.1 (May 31, 2013; 11 years ago (2013-05-31)) [±]
Kindle Fire 2.0 (December 19, 2013; 11 years ago (2013-12-19)[30]) [±]

Zoiper Android, iOS, Windows Phone Freeware No SIP, IAX Speex, G.711, iLBC, G.729, H.264, h263+, VP8 No August 2013

Frameworks and libraries

Program Operating systems License Protocols/based upon/compatible with Encryption Other capabilities Key and target markets Latest release
Tapioca Linux GPL Telepathy (software) Un­known 0.3.9 (June 12, 2006)
Telepathy/Farstream Linux, Mac OS X, Windows LGPL SIP, XMPP (Jingle), ICE (STUN/TURN), UPnP No Multi-user A/V conferencing, IM, collaborative applications Mobile devices (Maemo), Linux Desktop spec 0.17.8 (24-Jul-2008)
OPAL Windows, Linux (including embedded variants), Mac OS X MPL SIP, H.323, IAX2, CAPI, VXML Un­known Multi-user A/V conferencing, IM, IVR Softphones, Softswitches, Telephony application servers 3.10.3 (14-Oct-2011)

Server software

Program Operating systems License Protocols/based upon/compatible with Encryption Other capabilities Key and target markets Latest release
3CX Phone System Microsoft Windows Proprietary SIP TLS, SRTP Voice and Video IP telephony, Voice and Video conferencing, voice mail and instant messaging 25,000 - 50,000 users 11 (Jul 2012)
AS5300 Linux, Windows Server 2003 Proprietary SIP, UNIStim, MLPP SSL, 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)
AskoziaPBX no additional OS required (Linux based) GPL / Open core SIP, H.323, IAX, SCCP No ISDN, analog, Voicemail, Conferencing, MOH, ACD, IVR, Call forwarding, Call recording SMEs up to 50 users 2.2.2 (Dec 2012)
Asterisk PBX Linux/BSD, Mac OS X, Solaris GPL SIP, H.323, IAX TLS, SRTP VoIP Gateway, voicemail, basic accounting (can be expanded by interface with ODBC-compliant database), billing, conferencing, hot-desking, IVR trees with conditional logic, call queuing, automated call distribution[31] Enthusiasts, developers, enterprise users (capacity dependent on server design, scalable across multiple servers) 21.3.1 (17 May 2024; 7 months ago (2024-05-17)[32])

20.5.0 LTS (18 October 2023; 14 months ago (2023-10-18)[33])
19.8.1 (7 July 2023; 17 months ago (2023-07-07)[34])
18.20.0 LTS (18 October 2023; 14 months ago (2023-10-18)[35])


CallMax Softswitch Linux Proprietary SIP, H.323 SSL, TLS, HTTPS Integrated billing, Residential/Hosted IP PBX, Multilevel IVR menu, Calling card platform, Callshop module, DID-numbers, SIP Trunking, Authorization by SIP, PIN, ANI, IP address and login/password SIP Service Providers, VoIP service providers, IP PBX Users, Other Class 5 softswitch users 2.12 (January 2012)
Cisco Unified Communications Manager Linux Proprietary SIP, SCCP, MGCP, H.323 SSL, TLS, SRTP SIP Registrar/Proxy, Authentication Enterprise users 9.0
ClearSea (Mirial s.u.r.l.) Windows 2000/XP/2003/Vista/7 (including 64bit versions), Mac OS X (x86), iOS (iPhone 3S+, iPad 2), Android Proprietary SIP, H.323 No H.239 presentation, H.224, H.281 (FECC), Acts as a Session Border Controller, H.323/SIP endpoint autodiscovery on local LAN, Support user authentication with external databases / LDAP,Centralized Contacts Directory, User Groups management, Video IVR for dialing endpoint extensions, Ajax-powered web-based administration console, ClearSea desktop client one-step installation via HTTP browser, Automatic provisioning, configuration and secure authentication of ClearSea client based on user credentials Desktop video conferencing users, Enterprises, Educational and Healthcare organizations 1.0.3 (April 30, 2010)
CommuniGate Pro Linux/BSD, Mac OS X, Windows, Solaris, HPUX, AIX Proprietary SIP, XIMSS Protocol, XMPP SSL, TLS SIP Registrar/Proxy, Authentication, Diameter, RADIUS, ENUM, and many others... Mobile Operators, ISP's, and SaaS providers 6.0.1 (December 2012)
Elastix Linux GPL SIP, IAX, H323, XMPP No Unified communication server that also supports chat, mail and fax. Capacity dependent on server design, scalable across multiple servers 2.4.0 (February 6, 2013)
FreeSWITCH Linux/BSD, Mac OS X, Solaris, Windows Mozilla Public License 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 1.10.11 (December 22, 2023; 12 months ago (2023-12-22)[36]) [±]
GNU Gatekeeper Linux/FreeBSD, Mac OS X, Windows XP/2000/Vista/Windows 7 GPL H.323 H.235 H.460.18 firewall traversal, Routing, Accounting video conferencing, VoIP carriers large and small 2.3.2, May 25, 2010
Integrics Enswitch Linux Proprietary SIP, ISDN SSL, TLS, HTTPS, SIPS, SRTP Multi-tenant carrier services such as hosted PBX, ITSP, and calling cards. Integrated billing and invoicing. Carriers with 500 to 1,000,000 users across many customers 3.9, January 15, 2013
MediaCore Softswitch Linux Proprietary H.323, SIP SSL, TLS, HTTPS Dynamic routing mechanism, integrated billing, SIP-H.323 protocol converter, Transcoding - codec converter module, Guardian - revenue assurance module, SBC functionality, full and media proxy Transit VoIP services providers, VoIP wholesale carriers 2.24 (December 2011)
Murmur Linux/BSD, Mac OS X, Windows BSD / GPL 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 (25-5000 users) 1.2.4 (June, 2013)
Mysipswitch Linux BSD 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 Proprietary SIP No 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 SIP, XMPP No SIP Registrar/Proxy, Authentication, Diameter, RADIUS, ENUM, least-cost-routing and many others. SIP Service Providers Template:Latest stable software release/Kamailio
snom ONE (formerly pbxnsip) Linux/BSD, Mac OS X, Windows 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)
Revation LinkLive Windows server / Linux Proprietary Proprietary TLS, SRTP Secure Unified Communications, Presence, Instant Messaging/Chat, VoIP, Video, Desktop Sharing, File Sharing, IVR, PBX, Voicemail, ACD, Email Server Unified Communications Service Providers 6.3 (July 2013)
SIP Express Router (SER) Linux/BSD, Solaris GPL SIP No SIP Registrar/Proxy, Authentication, Diameter, RADIUS, ENUM, and many others... SIP Service Providers 2.0.0 Ottendorf
sipX ECS IP PBX Linux LGPL Native SIP Call Control TLS Full redundancy (HA), plug & play management including phones and gateways, fully featured Enterprises between 200 and 10,000 users, multi-site 4.4, April 2012
Unison Linux Proprietary SIP, XMPP, IMAP, SMTP, CalDAV SSL, TLS Unified messaging, IP PBX, IVR, instant messaging, calendar server, LDAP server, E-mail server Small and medium enterprise (25-256 users) 3.0, February 2010
vzRoom Windows Proprietary SIP SSL, TLS, AES Instant Messaging/Chat, VoIP, Video, Desktop Sharing, Video Sharing, whiteboard, File Sharing, scheduler, recording Individual to small and medium enterprise (2-1,000 users) 0.8.8.735, November 2010
Yate Linux, Mac OS, Windows GPL SIP, IAX, H.323, XMPP TLS 4.3, January 2013

See also

References

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