|
program
|
platform
|
License
|
Compatible protocols
|
Encryption
|
SIP accounts per profile
|
Video
|
Other functions
|
|
Brosix
|
Windows , Mac , Linux , Android , iOS , web client
|
Freeware : closed , proprietary
|
|
AES
|
|
Yes
|
Instant messaging, file transfer, voicemail, conference call
|
|
Cisco IP Communicator
|
Windows
|
closed , proprietary
|
SCCP ( Skinny ) / TFTP
|
|
|
-
|
|
|
Coccinella
|
Windows , macOS , FreeBSD , Linux
|
GPL free software
|
XMPP , IAX
|
Supports TLS / SSL and SASL
|
|
-
|
File transfer
|
| CounterPath X-Lite
|
Windows , Mac , Linux
|
Freeware
|
SIP , STUN , ICE
|
|
1
|
Yes (not on Linux)
|
Instant messaging, conferences (not on Linux)
|
|
Discord
|
Mac OS X , Windows , Android , iOS , Linux
|
Freeware : closed , proprietary
|
|
|
|
Yes
|
u. a. "Server" with channels
|
|
Ekiga
|
Windows , Linux ( POSIX )
|
GPL free software
|
SIP , H.323 , STUN
|
|
|
Yes
|
Instant messaging
|
|
Express talk
|
Windows , OS X , Windows Pocket PC , Windows Mobile
|
Freeware version & licensed version
|
SIP
|
|
|
-
|
6 lines, multiple accounts, conferencing, file transfers, recording, push-to-talk
|
|
Gizmo5
|
Windows , OS X
|
Freeware
|
SIP , XMPP
|
SRTP
|
|
-
|
Recordings, Voicemail, XMPP Instant Messaging, Gizmo5 to Phone, Phone to Gizmo5, Yahoo! Messenger, Google Talk, Windows Live support
|
|
Google talk
|
Windows
|
Freeware ( libjingle is free software )
|
XMPP
|
|
|
-
|
Instant messaging, file transfer, voicemail, email via "GMail Integration"
|
|
ICQ
|
Windows , Mac OS , Linux
|
Adware
|
|
|
|
Yes
|
Instant messages, video calls, file sending, picture sending, stickers
|
|
iChat
|
OS X
|
closed , proprietary
|
SIP AIM ICQ H263 H.264 XMPP
|
Encryption via the paid service MobileMe
|
|
Yes
|
integrated
|
|
is-phone
|
Windows
|
Trial / Proprietary
|
SIP
|
|
|
-
|
Integrated in IBM Lotus Notes and IBM Lotus Sametime
|
|
Jabbin
|
Windows , Linux
|
GPL free software
|
Jingle, XMPP
|
SSL
|
|
-
|
Instant messaging, file transfer, Google Talk support
|
|
Jitsi (formerly SIP Communicator )
|
Windows (with Java ), Linux , Mac OS
|
Apache free software
|
SIP / SIMPLE , XMPP
|
TLS , SRTP , ZRTP , AES , OTR
|
|
Yes
|
Instant Messaging, Remote Desktop , Call Forwarding, IPv6, Google Talk, Other Messenger
|
|
KPhone
|
Linux ( KDE )
|
GPL free software
|
SIP , STUN , NAPTR / SRV
|
SRTP
|
|
Yes
|
Instant messaging
|
|
Linphone
|
Windows , Linux , macOS (via MacPorts ), iOS
|
GPL free software
|
SIP
|
|
|
Yes
|
Instant messaging, IPv6
|
|
Lotus Sametime
|
Windows , Linux , Mac OS X
|
closed , proprietary
|
SIP , SIMPLE , T.120 and H.323
|
|
|
-
|
|
|
Mumble
|
Windows , OS X , Linux , iOS
|
GNU GPL , BSD license
|
Own protocol
|
AES-256 (control channel) / AES-128 (voice channel)
|
|
No
|
Conferences (channels), whispering, rights management
|
|
Phoner and PhonerLite
|
Windows
|
Freeware
|
SIP , STUN , SRV
|
TLS , SRTP , ZRTP
|
1
|
-
|
Recording, voicemail
|
|
QuteCom (formerly WengoPhone )
|
Windows , macOS , Linux , Windows Mobile
|
GPL free software
|
SIP
|
|
|
Yes
|
Instant messaging (Yahoo !, MSN, XMPP, Google Talk), Voicemail, QuteCom-to-Phone
|
|
Skype
|
Windows , macOS , Linux , iOS , Android , Symbian , Windows Mobile
|
Adware , proprietary
|
Own P2P protocol
|
unknown encryption ( AES at 256 bit)
|
1
|
Yes
|
File transfer, voicemail, SkypeOut
|
|
TeamSpeak
|
Windows , OS X , Linux , iOS , FreeBSD , Android
|
proprietary
|
|
|
|
No
|
Conferences
|
|
Twinkle
|
Linux
|
GPL free software
|
SIP
|
SRTP , ZRTP
|
|
-
|
|
|
Windows Live Messenger
|
Windows
|
Freeware
|
SIP , RTP , own protocol
|
|
|
Yes
|
Instant messaging, PC-to-phone
|
|
Yahoo Messenger
|
Windows , macOS , ( Linux / FreeBSD version not VoIP capable)
|
Freeware
|
SIP ( TLS ) & RTP (media)
|
|
|
Yes
|
File transfer, PC-to-phone, phone-to-PC
|
|
Zfone (formerly PGPfone )
|
Windows , OS X , Linux
|
Readable source code, proprietary license
|
SIP & RTP
|
SRTP , ZRTP
|
|
-
|
|
|
RetroShare
|
Windows , OS X , Linux , FreeBSD
|
GNU free software
|
Own P2P protocol
|
OpenSSL 1.0.0l
|
Infinite
|
No
|
Groups / chat, instant messaging, e-mail, newsgroups, anonymous / file sharing, darknet, streaming
|
