Editor’s Note: This article was originally posted November 2008 and there is an updated version for your viewing, 5 FREE SIP Softphones

I occasionally run into folks who are looking to deploy softphones versus traditional, desktop-based IP hard phones….and am often asked what softphone technologies are out there that are compatible with SIP based IP PBX platforms such as Asterisk and Trixbox. Below is list of the more popular SIP softphones, all of which are completely free to use.

QuteCom Previously known as WengoPhone, Qutecom is a free, SIP compatible VoIP softphone initially developed by Wengo. QuteCom supports a range of VoIP codecs including G.729, G.711, iLBC, G.722 (wideband) and Speex. H.263 for video is also supported.

XLite from Counterpath A very popular, free SIP softphone supporting a range of codecs and also offering great support for desktop business video conferencing.

ZoIPer Features support for both SIP and IAX, and includes free and paid versions of their software.

Firefly by FreshTel Free software supporting SIP and IAX, as well as a range of codecs.

DIAX Another free, open source softphone supporting both SIP and IAX. This one aint pretty, but has amasses a loyal following amongst hardcore, technical types due to the wide range of tweaking and configuration options it affords.

ExpressTalk Offers STUN and SIP support.

Damaka Self described “peer to peer” SIP softphone.

AdoreSoftphone Supports SIP RFC 3261 compliant stack.

MiniPAX Supports g729, g723.1, speex, gsm, and g711.

MizuPhone Has extra features like HD video, Remote Desktop over SIP and UltraWideband codec.

FlashPhone Unique Adobe Air , web based SIP softphone.

FaramPhone SIP softphone which utilizes the NGN, 3G network standards to make it be the potential communication terminal in both NGN & 3G networks. Users can use the softphone to make Audio, Audio & Video calls and conference among these networks.

Mirial Softphone Supports SIP and HD Quality, 720P video transmission.

YakaPhone Simple, skinnable IAX/IAX2 and SIP softphone from YakaSoftware.

WXCommunicator SIP Windows, C++, based on sipXtapi.

Twinkle SIP softphone for Linux users.

Ekiga Ekiga (formely known as GnomeMeeting) is an open source VoIP and video conferencing application for GNOME. Ekiga uses both the H.323 and SIP protocols. It supports many audio and video codecs, and is interoperable with other SIP compliant software and also with Microsoft NetMeeting.

IAXComm IAX softphone for Windows, Linux & Mac OS X

SJLabs SJPhone SJPhone is a softphone which allows you to speak over Internet using any desktops, notebooks, PDAs, stand-alone IP phones, and even any traditional landline or mobile phones. It supports both SIP and H.323 industry open standards and is fully interoperable with most major Internet Telephony Service Providers (ITSP) and software and hardware manufacturers.

Phoner Phoner is a free but not opensource Windows SIP softphone. It also supports ISDN cards using a CAPI interface.



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  1. Well, This article is very intersant, I have looked it…but ever i found X-Lite, SJLabs…and others i know not about any softphons wich as: WXCommunicator, Mirial Softphone, etc…I prefered the FaramPhone is very atractive im going to probe with my Central Asterisk…

    Thanks for this…

  2. Another (Asterisk-compatible) GPL softphone is Kiax (kiax.org) – Not a SIP softphone, but an IAX one, runs on Windows, Linux and Mac (intel x86).

  3. Some notes on G.722 capable softphones: It seems that QuteCom will work via asterisk 1.4 between softphone clients, but though the audio range sounds great, there are noticeable stutters during a wideband call.

    Some softphones don’t seem to be able to make direct calls between themselves and Polycom Wideband phones. Audio spoken into the softphone will not come out the Polycom. I’ve heard it works fine in a conference bridge.

    Also, don’t bother buying Bria or Eyebeam direct from counterpath if you want g722 codec. They only include it on versions sold to OEM resellers. In particular, look at the one from ZipDX, who offer wideband conferencing services.

  4. Thanks for the list of softphones. My X-Lite suddenly stopped working and caused my computer to reboot every time I tried to make a call. For me, finding another free softphone is urgent as I use this as my primary home phone. I installed ExpressTalk and it seems to be working….for now.

  5. I have an AdTran NetVanta, which is SIP compliant and I have their version of SoftPhone. Any idea which of these will work with my AdTran device?

  6. Hi
    I am the deveoper of the MizuPhone sip client listed above ( http://www.mizu-softphone.com ). I see many comments regarding g722 and just want to share my experience with that. To be short: speex is much better and supports ultra-wideband too. It has lower bandwidth requirments and it is open source (mizuphone supports g722 too, but the ultrawideband speex quality is better than skype )

  7. You can also add Mercuro IMS Client (http://www.mercuro.net). Mercuro is an IMS client that could be used as SIP client. Is compliant with IETF/OMA/3GPP/GSMA specs. For capabilities you have: Voice, Video, chatting (MSRP, SIMPLE with both pager and session mode), XCAP contact storage, MSRP File transfer, …

  8. It might be useful to add which phones can be used as USB stick portable apps.

    The only two I have located so far

    Any others?

    Why bother ? If you have Wireless Broadband on a stick…something like a HUAWEI E160 they come with a micro SD card slot. Putting your softphone on it makes sense you can then use it with any Notebook etc

  9. Nice article,
    Do you know if an API exists to develop plugin for some open source softphone on linux? I mean, without touching to the source code?
    Thank you,
    Best regards

  10. have a customer interested in using softphones for their law office. Anyone have a recommendation of one over another?


  11. Please help me on the best video sip phone available in the market. I am quiet confused about the best video soft phone for free among the lot given here? i am using a portaone Voip solutions to configure the sip traffic. please help..!!

  12. Is there a SIP phone that supports AMR-WB[G722.2] codec? The Wengphone rebranded as Dooxsoft claims that it support AMR-WB and the trial version doesn’t.

    Thanks in advance.

  13. You can also try our free version of CCI-Phone. This is a SIP softphone that supports in commercial mode g729,g722,g711U/A

    If you want to try let me know.

  14. Do any of these soft phones support call transfer (attended transfer or blind transfer) ?

    Haven’t been able to find one that does.

  15. How can I find out which of these phones support multiple SIP account registration? I want the phone to register simultaneously with 2 independent SIP accounts.

    Thanks for your help

  16. Well one of the things that is hard is I am totally blind as in can’t see and I know a lot of these phones are really difficult to use for blind peoploe.

  17. Is there any sip phone which has proxy settings in connection and username and password for proxy authentication same like in Gtalk connection section.

    I am using xlite and in office i connect to internet by proxy server

  18. Jeff,

    You can use Express Talk as listed above with some configuration. Here’s an answer from the Google Voice Help Forum:

    “You don’t configure the Express Talk softphone for Google Voice, you configure for a SIP service like Sipgate or Gizmo.

    For sipgate (sipgate.com) or gizmo (gizmo5.com), you will need to sign up first. You will then need your server or sip proxy address. You will also need your SIP number and password.

    You will then pull down the File window in Express Talk and choose Options. In Options, you will click on the tab called Lines. There you will input your Name, Server/SIP proxy, SIP number and password. After you are done, click OK and the Express Talk should work.

    For Sipgate, you will find that Server/SIP proxy is sipgate.com / Gizmo is proxy01.sipphone.com

    For Sipgate, the SIP number is something like this (each person is different): 9495541e0 Gizmo is something like this: 17474634XXX

    For Sipgate’s password, you will have to use theirs. You can find this in your settings, when you click on Phone of…, it will have a pull down menu and you choose SIP credentials. For Gizmo, I believe the password is the one you chose with the account.”

  19. Can someone tell me, if any of this softphones support auto-answer? Zoiper does, but only in Biz (non-free) edition.

  20. DIAX supports auto-answer, but it works with IAX only, not SIP (so, there is an error in its description on this page)

  21. Hi guys. i have been looking for a solution were i can automatically configure the account information on the soft phones based on the person that is logging on to the windows domain. I have a trixbox pbx and a windows domain with now zoiper and x-lite installed on the windows clients. i really would appreciate comment on if this is possible or not.

  22. “QuteCom supports a range of VoIP codecs including G.729, G.711, iLBC, G.722 (wideband) and Speex. H.263 for video is also supported.”

    This peace of crap does not support g729 codec or this codec might be stealth so I can not see it in configuration which I doubt as I tried to call with server which support g729 and get error.

  23. @ http://www.aplitel.com

    Seems to be a nice tool and I guess I will like the UI because it Looks like a real phone.
    But it’s not working on Windows8.
    I got an error when I choose custom install and after the Setup it crashed with an application error.

    Hope you will fix this!

  24. Hi
    Can anyone please advise if any of these softphones allows to change output ‘cli’ or sometimes reffered to as ‘output CID’

  25. Stone Conservation Supplies

    I saw another comment about multiple sip accounts, has anybody got any idea which clients support this? I understand the 3CX Windows client supports this but unfortunately stopped working when I upgraded my laptop to windows 8…

  26. Is there a softphone out there that supports ALL the functionality of the Ring Central voip service and Plantronics Voyager Legend-UC Bluetooth (B-235) headset (free or otherwise)? I am using the Ring Central (free) call controller and the Bria 3 softphones and neither seem to support ALL the functions?