A softphone is a software application that uses voice-over internet protocol(VoIP) for telephony calls by using computer devices. It is also known as soft clients. Some softphone design is similar to traditional telephone looking like same display panel and button style. Softphone used headset and microphone or sometimes using analog telephone adaptor which allows VoIP calling from telephone handset.

The best softphone is one whose User Interface(UI) is well design and buttons are medium size and arrange properly. Properly design softphones show important functions in front of softphones and the configuration and integration of well design softphones are easy to understand. Lets we see some of the top 5 best softphones.

3CX

3CX is a good design softphone and this softphone has also won the award for its good design and useful features. The team of 3CX is very motivated and works continuously to provide something different as compared to competitors. The button is well designed and large in size which easily visible and other important functions are given in front of the softphone.

X-Lite

X-Lite is manufactured by a Canadian-based company. X-Lite softphone is a feature enrich and freeware version. you can install this sip softphone free of cost. X-Lite provides the benefit of Use the Contact list to manage your contact information and sort them into groups for work, friends, or family. Open standards and Session Initiated Protocol (SIP) based call signaling allows X-Lite to work with a wide number of networks.

Zoiper

Zoiper is another great softphone. Zoiper is also compatible with most VoIP service providers and PBX. Zoiper supported text messaging, receiving and sending faxes, and audio-video calls. Zoiper includes some basic features used in call centers, such as call recording and auto answer. Zoiper runs on different platforms. No matter either you are using Linux, mac, or windows.

Twinkle

Twinkle is another free and open-source softphone for Linux users. This softphone is used for voice-over IP and instant messaging communications using the SIP protocol. You can also use it for the direct IP phone to IP phone communication or in a network using a SIP proxy to route your calls and messages. Twinkle provides the features of Multiple active call identities, Call Waiting, Blind call transfer, Automatic failover to an alternate server if a server is unavailable, etc.

QuteCom

Qualcomm is what was previously known as WengoPhone. This is free of cost open-source and easily downloadable sip supported softphone initially develop by WengoPhone. You can modify its appearance according to your need and you can also modify The video and sound priorities.