The list below only includes user agents that are actively maintained and
claim to conform to RFC 3261.
| Name |
SIP features (TLS, TCP, NAPTR, ...) |
Audio |
Video |
Presence |
License |
Remarks |
|---|
| ActXPhone |
|
? |
- |
|
|
ActiveX controls |
| Centile VoicePad |
|
yes |
- |
|
|
ActiveX controls |
| damaka |
|
? |
yes |
basic |
free download, with fixed server |
|
| eStara softphone |
|
|
yes |
- |
- |
free trial |
|
| eyeP Media |
|
Narrowband: G.711, iLBC, Speex, GSM, G.726, G.729A; wideband: G.722,
G.722.2, Speex |
H.261, H.263 (including 1998, 2000 versions), H.264 |
no |
30-day evaluation |
|
| Counterpath Eyebeam |
TCP |
Narrowband: G.711, iLBC, Speex, GSM, G.723.1, G.726, G.729a, EVRC; Wideband:
Speex, L16, DV14, G.722.2 (AMR-WB); RFC 2833 |
yes |
H.263, H.263+ |
purchase |
formerly known as Xten |
| Gizmo |
|
no |
yes |
with service |
- |
|
| is-phone |
SRTP/TLS, STUN/NAT, TCP, UDP, VPN |
G.711u, G.711a, G.721, G.723,G.726 (16/24/32/40), Speex (8/16/32), iLBC,
GSM (other codecs on request), QoS Support (diffserv, 802.1p) |
H.263, H.264, Theora, MPEG4V3 |
Sametime, Outlook/Live Messenger (others on request) |
Free trial, commercial license |
integrated into IBM Lotus Notes/Sametime/Symphony and Microsoft Outlook/Exchange/Live
Messenger/Office/Interne Explorer, Audio (16 participants) and Video (4 participants)
conferencing (100% software based), OEM versions |
| Jajah |
|
yes |
no |
with service |
- |
Web plugin, iPhone, ... |
| Kapanga |
3261; 2833; STUN |
G.711, G.722.1, G.723.1, G.726, G.728, G.729A, AMR, GSM, iLBC, Speex |
H.263, H.263, H.264 |
|
Free download |
also T.38 fax |
| Nextiva |
|
? |
- |
yes |
|
|
| QuteCom |
3261G.711, Speex |
- |
|
Open source |
formerly known as OpenWengo |
| sipc |
UDP and TCP |
G.711, GSM |
H.261 |
basic, RPID |
Licensed via FirstHand |
supports media streaming, SLP, emergency calling, peer-to-peer |
|
| Xten x-lite |
UDP and TCP |
G.711, GSM |
- |
- |
|
|
| Zoiper |
STUN, UDP only |
G.711, GSM, iLBC, G.729,speex |
- |
- |
free download |
fax to come |
| Name
| Audio
| Video
| Presence
| License
| Remarks
|
|---|
| Cornfed
| -
| G.711, G.729 (commercial version), RFC 2833 DTMF
| -
| -
| free for personal use
| Designed to support multiple services: maintains registrations with
multiple service providers automatically and simultaneously.
Gnome GUI and command line client front-ends.
|
| Ekiga
| iLBC, GSM-06.10, MS-GSM, G.711-Alaw, G.711-uLaw, G.726, G.721 and
Speex
| H.261 QCIF Video Code
| open source
| "support[s] both H.323 and SIP, as well as audio and video. Ekiga was
formerly known as GnomeMeeting."
|
| minisip
| G.711, ?
| yes
| -
| open source
| supports SRTP, MIKEY
|