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Since a FreeDID is basically a local phone number, they can be used the same way. Here are some examples:

• Receiving wi-fi phone calls - by simply downloading one of many free SIP/VoIP phone applications onto your smartphone, you can use our FreeDID to receive phone calls without using your mobile provider's network. Rather, calls are routed to your phone over your high-speed internet connection.


• Making wi-fi phone calls - since each FreeDID comes with 60 minutes of free domestic outbound calls, you can also make calls using the same free SIP/VoIP phone application.

• VoIP enabled PBXs (IP PBXs) - since our FreeDIDs are delivered using SIP trunking technology, you can easily connect them to any SIP enabled PBX such as Asterisk, 3CX, Trixbox, Elastix and more.

• A second phone line for your smartphone - many of our users use our FreeDIDs as a secondary phone number. This allows them to advertise a different phone number than their personal cell phone number when the need calls for it.

5 Recommended Free Softphones

5 Recommended Free Softphones

Try one, or try them all, they're free!

We frequently are asked by our customers who are in the process of installing or configuring a new PBX system, "which softphones do you recommend?."  While we support most SIP-based softphones available on the market, we do tend to work with some vendors more than others.  

Below is a list of the more popular SIP softphones, all of which are completely free download and use. Choosing the right softphone for your particular needs will depend on many factors, like which operating system you plan to use, what phone features you require, and what PBX system it will be connected to.  

Have a look, download and play around with one or all of them to find the right softphone for your requirements.




Zoiper runs on a multitude of different platforms: Mac, Linux or Windows, iPhone and Android - with support for both SIP and IAX, and includes free and paid versions of their software. 



csspCSip Simple

CSipSimple is a SIP softphone for Google Android operating system using the Session Initiation Protocol (SIP). It is open source and free software released under the GNU General Public License.



dgswvSwitchvox Softphone for Mobile

Switchvox Softphone app gives you all of the enterprise-class Unified Communications features you expect from Switchvox, now available on the go.



3clogox3CX Softphone

The 3CX softphone for Windows is a free softphone that you can use to make and receive VoIP phone calls from your PC. The advantage of using the 3CX softphone for Windows is that you can leverage low cost or free VoIP calls.


xliteX-lite Counterpath

A very popular SIP softphone supporting a range of codecs and also offering great support for desktop business video conferencing