Zoiper is a service-independent VoIP softphone for voice and video calls, messaging, presence, and fax.
Alternatives to Siperb Mobile Softphone
Siperb Mobile Softphone turns an iOS or Android device into an extension for an existing PBX or SIP system. It handles audio and video calls, attended or blind transfers, three-way conferences, DTMF, call history, presence and end-to-end encryption. Push notifications can wake calls when the app is backgrounded, locked or restarted. One account spans web, Windows, macOS, Linux, iOS and Android, sharing contacts, settings and call history. Browser, desktop and mobile apps,…
Bria Solo is a softphone for individual users who want to make voice and video calls using a service provider, call server, or IP PBX they choose.
SessionTalk Softphone provides native softphone apps and a hosted PBX service through SessionPBX, combining voice and video calling with team messaging.
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Phoner
Phoner adds a second phone number to an existing mobile device for calls and texts, so users can keep their personal number private.
AndroidiOSWeb6.9From $9.99 a month - 5

Aria
Aria is a native SIP softphone for connecting to standards-compliant SIP servers.
Free planAndroidiOSAPILinux6.8Free plan - 6

Blink
Blink is a real-time communications client built on SIP, connecting to SIP providers, Bonjour on a local network, and SIP2SIP.
Free planAndroidiOSWebLinux6.8Free plan - 7

Sip:phone
Sip:phone is a mobile client that connects Android and iOS devices to Sipwise C5 and CPBX as extensions of an existing business phone system.
Free planAndroidiOSAPI6.8Free plan - 8

SipPulse Softphone
SipPulse Softphone is a professional softphone for telecom operators, supporting voice, video, and messaging on mobile, desktop, and web platforms.
Free planAndroidiOSWebExtension6.8Free plan - 9
Talkatone
Talkatone is a calling and messaging app for Android and iOS that uses WiFi or cellular data rather than cell minutes.
Free planAndroidiOS6.8From $12.99 a month - 10

Linphone
Linphone is a free, open-source app for VoIP voice and video calls, messaging, and videoconferencing.
Free planAndroidiOSWebAPI6.7Free plan - 11

MicroSIP
MicroSIP is a free softphone for Windows desktop calling over VoIP.
Free planLinuxmacOSWindows6.7€150 one-time - 12
AGEphone
AGEphone is a SIP softphone that connects to a compatible Hikari Denwa home gateway, making a smartphone an extension of the household phone.
Free planAndroidiOSWindows6.6Free plan - 13

Mizu WebPhone
Mizu WebPhone is a SIP-based VoIP client that can be embedded in a webpage or used through a JavaScript library.
AndroidiOSWebAPI6.6$990 one-time - 14

PortSIP Softphone
PortSIP Softphone is a free softphone app for Windows, iOS, and Android, with browser calling and SIP support.
Free planAndroidiOSWindows6.5Free plan - 15

Softphone Plus
WebLinuxmacOSWindows6.5 - 16

Tabd
Tabd is a browser phone that connects SIP extensions to an existing PBX, allowing calls from Chrome tabs.
Free planWebAPIExtension6.5From $39 a month - 17
Softphone.Pro
AndroidiOSWebmacOS6.4 - 186.2
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Groundwire
AndroidiOS6.1$9.99 one-time - 20

Halcyon
Halcyon is a free Android softphone for SIP calls through a PBX, built on PJSIP and integrated with Android Telecom.
Free planAndroidLinux6.1Free plan - 21
MobileVOIP
MobileVOIP is a freemium app for making international calls from mobile phones or computers, with a free download for iPhone, Android, and Windows.
AndroidiOSWindows6.1 - 22
Telephone
Telephone is a SIP softphone for making and receiving VoIP calls on a Mac over the Internet or a company network.
Free planmacOS6.1Free plan - 23

Sipnetic
Sipnetic is a free Android VoIP softphone that uses SIP accounts to connect with compatible VoIP providers, cloud PBXs, or enterprise telephony servers.
Free planAndroid6.0Free plan - 24
CloudSIP
WebLinuxmacOSWindows5.9 - 25
Sipdroid
Sipdroid is a free SIP/VoIP client for Android that connects with the phone’s built-in contacts and dialer.
Free planAndroid5.9Free plan - 26

Browser Phone
Browser Phone is a WebRTC SIP phone for Asterisk, FreeSWITCH, and other SIP-based PBXs.
Free planWebSelf-hosted5.8Free plan - 27

PhonerLite
PhonerLite is a free Windows softphone for Internet telephony that requires a SIP account from a compatible provider.
Free planWindows5.8Free plan - 28
GOnnect
GOnnect is a free, GPLv2 open-source desktop client for phone calls, chat, and video conferencing.
LinuxWindows5.7 - 29

Acrobits Softphone
AndroidiOS5.6 - 30

ContactPoint IP Phone
Windows5.5


