SIP Clients

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Solgari is a cloud-based contact center and communication solution for small, midsize and large businesses. It caters to financial services, FinTech, e-commerce, retail, logistics, recruitment and government. Primary features incl...Read more about Solgari

5.00 (1 reviews)


Nextiva is a platform that brings communications together with business applications, intelligence, and automation. This helps businesses communicate and build deeper connections with their customers. The platform brings all ...Read more about Nextiva

4.10 (205 reviews)

28 recommendations

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GoTo Connect

GoToConnect (formerly Jive) delivers a cloud-based unified communication solution to organizations of all sizes across the U.S. GoToConnect includes integrated products for business VoIP, video conferencing and contact center whic...Read more about GoTo Connect

4.50 (628 reviews)

34 recommendations

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Comm-unity by NetFortris (formerly Fonality) is a cloud-based communication and collaboration business phone system that caters to all business sizes. Comm-unity scales easily as your business grows, always works when you need it,...Read more about Comm-unity

3.37 (15 reviews)


Answer360 is a cloud-based VoIP solution designed for small and midsize businesses. The solution offers call routing, video conferencing, SIP trunking and other call center functionalities. Answer360 offers hosted VoIP phone ...Read more about Answer360

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AVOXI Genius is a cloud-based call center solution that helps small to large enterprises streamline customer service operations and manage business communications. It comes with a centralized dashboard, which enables users to trac...Read more about AVOXI

4.76 (50 reviews)

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Convoso’s all-in-one contact center platform generates and converts leads faster using multiple communication channels. The cloud-based solution offers multiple dialing modes (predictive/power/preview) along with two-way texting, ...Read more about Convoso

4.59 (58 reviews)

1 recommendations

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RingCentral MVP

RingCentral MVP is a cloud-based business communications solution that offers tools for Messaging, Video and Phone. Core features of the solution include conferencing, auto-recording and unlimited long-distance and local calling. ...Read more about RingCentral MVP

4.22 (1017 reviews)

35 recommendations

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Bright Pattern

Bright Pattern is a cloud-based contact center software solution which helps businesses manage multichannel service including inbound and outbound voice, email, chat, and social media. Bright Pattern scales from 5 to 10,000 concur...Read more about Bright Pattern

4.73 (98 reviews)

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MiCloud Connect

MiCloud Connect (formerly ShoreTel) is a cloud-based VoIP phone system that offers collaboration and conferencing tools to enable information flow within the organization. The solution enables system administrators to manage use...Read more about MiCloud Connect

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Slingshot VoIP

Slingshot VoIP includes automated attendants, employee extension features, predictive dialer, automatic call distribution and more. The solution is cloud-based and provides mobile apps for Android and IOS users. Slingshot can...Read more about Slingshot VoIP

4.00 (1 reviews)

Vonage Business Communications

Vonage Business Solutions is a cloud-based communications solution suitable for small and midsize companies. The solution offers a business phone system that enables businesses to connect their VoIP phone system to internet-enable...Read more about Vonage Business Communications

4.06 (263 reviews)

6 recommendations

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Avaya IP Office

Avaya IP Office is a cloud-based and on-premise communications and collaboration solution designed for small to midsize businesses. It features multiple auto attendants, auto dialing, conferencing, voicemail-to-email, call fo...Read more about Avaya IP Office

4.23 (35 reviews)

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SendHub is a business voice over internet protocol (VoIP) solution. Integrated applications for PBX, Auto Dialer, ACD, CTI, workforce scheduling, softphone, SMS marketing and more are available within the system. This solution is ...Read more about SendHub

4.26 (34 reviews)

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Huawei eSpace Contact Center

Huawei eSpace Contact Center is a cloud-based contact center solution that caters to various industries such as education, finance, healthcare, government, manufacturing and energy. The solution supports sharing of resources,...Read more about Huawei eSpace Contact Center

4.00 (1 reviews)

Ooma Office

Ooma Office is a cloud-based voice + video solution suitable for businesses of all sizes. The platform includes a full suite of business phone features designed to deliver a flawless communications experience and advance team coll...Read more about Ooma Office

4.50 (159 reviews)

10 recommendations

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NetVanta 7100

ADTRAN’s NetVanta 7100 is an IP data networking and telephony solution integrated into one single platform. Designed mainly for small to midsize businesses, NetVanta 7100 is suitable for businesses up to 100 workstations. The solu...Read more about NetVanta 7100

4.00 (1 reviews)

MiVoice Business

Mitel MiVoice Business offers a range of unified communications (UC) platforms designed for both small business and large enterprise needs. MiVoice offers virtualization options and supports both cloud-based and on-premise deploym...Read more about MiVoice Business

4.33 (3 reviews)

XMission Hosted PBX

XMission is a cloud-based hosted PBX solution that offers a set of business services which include web hosting, unified email and collaboration. XMission allows users to retrieve a voicemail from a specific email address. The...Read more about XMission Hosted PBX

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3CX Phone System is an open standards communications solution, suitable for any sized business that wants all the features of an advanced contact center at a fraction of the cost. 3CX can take your business communications to the n...Read more about 3CX

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Buyers Guide

Last Updated: November 23, 2022

Choosing the right SIP client for business VoIP can be a daunting task. To begin with, what do all these abbreviations even mean? And which is the right Android, iPhone or desktop SIP client for you?

Even if you know what VoIP and SIP stand for—Voice Over Internet Protocol and Session Initiation Protocol, respectively—that doesn’t clarify what these technologies can do for you.

Luckily, SIP and VoIP clients are much simpler than they may seem. We’re here to help you understand the differences and pick the best app for your Android device or iPhone. This buyer’s guide will cover the basics that will help you get started in the market.

Here’s what we’ll cover:

What are SIP Clients?
Common Features of SIP Clients
The Vendor Landscape
Benefits of SIP Clients

What Are SIP Clients?

SIP clients are software applications built to run on mobile devices with internet connections. These apps facilitate over-the-top (OTT) communications, that is, communication channels that cut service providers out of the picture. Mobile VoIP apps allow you to send voice calls and SMS messages over a Wi-Fi connection.

SIP clients are examples of what is known as unified communications (UC) clients. Unlike simple VoIP softphones, which strictly allow you to make and receive calls over the internet, UC clients include expanded capabilities, such as voicemail, SMS and instant messaging, video conferencing and call settings.

Common Features of SIP Clients

SIP clients often include the following core capabilities:

Voice calling Make and receive calls through your internet connection.
Video calling and conferencing Place and receive video calls on devices with cameras. Some apps allow for video conferencing with multiple users.
Call history Track incoming and outgoing calls.
Voicemail Let callers leave voice messages when you’re not available, listen to voice messages, return calls and check voicemail left on one device from another.
Call settings Use remote control over call settings, route calls from office phones to mobile phones and login to accounts remotely.
SMS text messages Send and receive short message service (SMS) texts over internet connections.

The Vendor Landscape

To help you determine which SIP client is right for you, let’s take a look at a few popular products.

Ringio. Call center software solution Ringio offers a VoIP mobile app for both Android and iOS devices. This app lets users sync contacts, set up and check voicemail and make calls on their mobile devices from their business numbers.

Call history in Ringio

Call history in Ringio (Source:

CSipSimple. CSipSimple is a SIP-based application designed specifically for Android phones. Users of this application can make free calls over Wi-Fi connections.

One of CSipSimple’s most attractive features is that it is free, open-source software.

CSipSimple’s user interface

CSipSimple’s user interface

Zoiper. SIP client Zoiper offers voice and video calling, video conferencing, call recording, call transfer and an auto-answering feature. It has native mobile apps for both Android and iOS devices. Zoiper also provides an on-premise deployment for Windows, Mac and Linux systems.

Make calls in Zoiper

Make calls in Zoiper (Source:

Benefits of SIP Clients

Here are some benefits to consider when looking for the right SIP client:

Reduced cost and hardware requirements. Some users forego traditional office phone systems in favor of conducting all their business communications through SIP clients. This means you can save money right off the bat by not investing in extra hardware.

Easy integration with existing software. Many SIP clients can integrate with your existing software. For example, Zoiper can aggregate your contacts from Outlook as well as Android and iOS devices. Many of these apps also offer integration with customer relationship management (CRM) software, such as Thunderbird and Zoho CRM.

Over-the-top communications. We briefly discussed OTT communications earlier in this guide. Using OTT communication technologies, such as SIP clients, means you’re cutting out traditional service providers completely. You can make free calls and send SMS texts over public Wi-Fi with these apps.

Market Trends to Understand

Bring your own device (BYOD): As more and more businesses adopt a remote workforce, the concept of BYOD is gaining popularity in the market. BYOD refers to a set of policies that allow users to install business apps and access business data on their personal devices, such as smartphones, tablets and desktops. This allows users to cut down on significant costs in hardware purchase and work securely in mobile locations.

SIP clients allow users to implement BYOD in their business communication processes. With SIP, users can install VoIP calling apps on their Android and iOS devices to securely manage emails, messages and voice calls.

Multi-channel communication: Instead of having disparate systems for managing different communication channels, such as voice calls, messages and emails, businesses are adopting multi-channel communication strategies. Unlike traditional business VoIP products that offer only the capability of voice calling, SIP clients provide the capability of managing multichannel communication, such as SMS, emails, chat messages and voice messages, from a single platform. With this trend, SIP client services are gaining popularity in the market.

Diversifying your communications profile: SIP clients offer an alternate option for the UC profile. In case of issues in the primary UC services, businesses can leverage SIP clients to manage their communication services.

Toll bypass: Communications are one of the major costs of running a business. Within this expense, purchasing network hardware, such as phone systems and cables, constitutes a significant portion of the expenses. Traditional phone systems charge voice calls on per minute basis.

A SIP client service allows users to bypass all these costs. Toll bypass refers to routing voice calls from traditional phone systems to a VoIP solution that runs over the internet. This way, data costs are significantly lower than traditional network calls and it saves capital in the overall communication expenditure.

This service is more popular with businesses across multiple countries, where tariffs for international calls are significantly higher than the local tariffs. Using a SIP-client-enabled VoIP service allows users to stay within their communications budgets. This service is another reason why SIP clients are in demand in the market.