Top 10 Best Free And Open Source IVR Software



Senior editor

Parul Saxena

Chief editor

Last updated: August 25, 2020

In the current business scenario, enterprise Voice over Internet Protocol (VoIP) has become a standard infrastructure system. 

This trend is no doubt highly beneficial for all corporate stakeholders with a high level of functionality, lower phone bills, and flexible scalability. 

This is precisely why companies all over the globe have ditched traditional wired telephonic systems and moved towards cloud-based virtual telephony.

What Is IVR Software? 

IVR, or interactive voice response, is a technology that enables callers to interact with the computer to make a selection from a telephony menu system. 

The selection can be made through keypad entries or voice responses. It has pre-recorded audio that directs users on how to proceed further. 

Thus, the IVR system allows a computer system to process a transaction without any human interruption. 

In fact, IVR solution market size is estimated to reach $6.11 billion by 2025, after growing at a CAGR of 6.31% during 2020-2025.

It is one of the most simple and effective methods to handle large call volumes within any organization.

What Is the Need for an Interactive Voice Response (Ivr) System? 

Technology has changed the way organizations handle their communication practices today. 

For starters, IVR software has completely transformed the internal communication structure and brought about higher team collaboration and client retention. 

In addition, it enables companies to provide superior quality support to their customers. 

What it lacks: users who dislike interacting with a support agent every time for minimal assistance, IVR automates most of the customer support services. 

IVRs allow customers to solve their own problems and obtain the information they are searching for without speaking to an agent. 

And if an IVR system isn’t able to meet a caller’s needs adequately, it will route the call to the most appropriate department to address your issue. 

In fact, the IVR market is forecast to reach $5.54 billion by 2023. This clearly demonstrates how open source IVR software tools have penetrated the business ecosystem. 

It’s high time to get onboard and accrue the revolutionary advantages of VoIP solutions.

List of Best Open source and Free IVR Software

Choosing the best IVR software platform can be a daunting task. 

It is important to be aware of one’s business communication requirements, expansion plans, and security needs before investing in customer engagement software. 

To help, we have compiled a detailed list of the ten best open source and free IVR software that you can What it lacks:ider using. 

Looking for Cloud Telephony & IVRS Software? Check out SoftwareSuggest’s list of the best cloud telephony & ivrs software solutions.

Tool #1. Express Talk VoIP Softphone

ExpressTalk SoftPhone

Express Talk Softphone is an advanced VoIP solution that works like a computer telephone.

It allows users to make calls through a laptop or computer and integrates with virtually any VoIP gateway provider.

Key features

  • Can support up to six separate lines
  • Integrates with a wide range of USB hardware
  • Facilitates business users to convert VoIP powered services into conferencing apps
  • Pre-built phonebook for contact management

What users like the most

  • Supports emergency numbers calling (e.g., 911, 999, 000)
  • Advanced Key features like call recording and call holding

What it lacks

  • Call transfer is limited to the business version

What’s Unique

Express Talk is highly popular due to its easy functionality and enhanced Key features such as noise reduction, data compression, and echo cancellation.


Express Talk VoIP softphone provides a free trial for non-commercial users with all necessary Key features.

You can upgrade it to: 

  • Corporate Edition Quarterly Plan: $5.50 per month
  • Fully featured, single installation license: $69.95
  • Business Edition: $39.95 

Tool #2. Skype

Free International Calling AppSkype is one of the most widely used open source IVR systems in the market. It owes its popularity to its user-friendly interface and seamless integration with other solutions. 

It not only offers free audio and video calling facilities, but you can also even share instant messages, data, and files using the system. 

Key features

  • Comes integrated with Microsoft, and syncs with Outlook automatically
  • Links can easily be shared to invite participants for meetings
  • Enables call recording and screen saving in easy clicks
  • Offers an unlimited amount of minutes

What users like the most

  • Reliability and flexibility
  • Easy-to-use application 

What it lacks

  • Audio and video calling quality needs improvement as it experiences lags sometimes

What’s Unique

Skype is What it lacks:idered one of the best free IVR software tools due to its diverse communication functions, minimalistic interface, and quick installation.


Skype allows you to make free calls to other Skype users. You can upgrade the plan to: 

  • World Subscription (Unlimited mobile and landline calls): ₹1091.50 per month
  • India Subscription (Mobiles and landlines: 800 minutes): ₹619.50 per month
  • USA Subscription (Unlimited mobile and landline calls): ₹236 per month

Tool#3. Ekiga

EkigaEkiga is a free IVR software that is compatible with almost all the commonly used internet telephony protocols. It facilitates instant messaging, audio/video conferencing, call holding, and transfer services over the Internet.

In addition, it can support HD sound quality and video up to DVD size and quality.

Key features

  • Has a modern and graphical user interface
  • Compatible with major platform operability – Windows and Linux
  • Supports SIP and several codecs

What users like the most

  • High definition sound and video quality
  • Remote and local address book support

What it lacks

  • No version for Mac OS
  • The limited set of advanced Key features

What’s Unique

One significant aspect of Ekiga is that it offers free SIP addresses to users so that they can use it to connect with any other softphone that supports SIP.


This reputable open source IVR software allows users to make free audio and video calls.

Tool #4. Jitsi

JitsiFormerly known as SIP communicator, Jitsi is a multi-faceted VoIP, instant messaging, and video-conferencing application. It is a Java-based software and supports several popular internet telephony protocols.

Companies like Comcast, Symphony, and WeSchool, amongst others, are using Jitsi. 

Key features

  • Runs on all major operating systems, including Linux, Windows, and Mac OS
  • Supports easy screen sharing for online presentations
  • Enables desktop streaming and encryption for calls
  • Offers two-way audio and video calling

What users like the most

  • Real-time chat facility
  • Easy-to-use mobile application

What it lacks

  • It occasionally has audio delay and lags

What’s Unique

Jitsi serves as a great customer support software due to its quick speed in connecting calls and a highly user-friendly interface.


Jitsi is free to download and use – it just requires a good internet connection for it to work seamlessly.

Tool #5. MicroSIP


A sophisticated open source IVR software, MicroSIP is a VoIP system for Windows that provides optimal customization for users.

It offers a wide range of key features that enables users to make high-quality VoIP calls via open SIP protocol.

Key features

  • Offers high user portability
  • Has a user-friendly and intuitive interface
  • Provides configurable encryption TLS / SRTP for control and media
  • People with visual impairments can use it via screen reader software 

What users like the most

  • Apex HD sound quality
  • Conforms to SIP standards

What it lacks

  • Customer support is hard to reach

What’s Unique

The multi-language option of Micro SIP sets it apart as users can apply a variety of global languages for better utility. It can support Brazilian, Bulgarian, Chinese, and many more languages. 


  • Basic: Free
  • Custom solution: $145

Tool #6. Zoiper

ZoiperZoiper is a multipurpose VoIP platform that offers a unified communications package for all types of organizations. It supports audio, video, fax, and instant messaging – all from one intuitive and interactive interface.


Key features

  • Available on iOS and Android mobile devices
  • Easily integrates with many PBX office phone systems
  • Runs of multiple platforms – macOS, Linux, and Windows
  • Supports number recognition, Outlook, and Thunderbird plugins

What users like the most

  • Compact and minimalistic interface
  • Less CPU usage

What it lacks

  • The limited number of license usages
  • Maybe likely to require a technician or IR resource person for set up

What’s Unique

One of the differentiating factors about Zoiper is that it offers encryption of text, voice and video communication, hence providing excellent data security.


Zoiper has a free basic version along with various premium pricing plans:

  • Premium: €39.95
  • Zoiper 5 for Windows, Mac & Linux: €39.95 + €7.99 (€47.94)
  • Zoiper Pro for Android: £6.99
  • Zoiper Premium VoIP softphone for iOS: $4.99

Tool #7. TeamSpeak

TeamSpeakTeamSpeak is a novel open source IVR software tool that allows groups to communicate using real-time chat and video conferencing. It has a feature-rich collaboration tool that can help in smooth data sharing.

With its advanced Client-Server architecture, you can easily scale up from small group conversations to large conferences with thousands of participants. 

Key features

  • Have integrated automatic microphone volume adjustment, background noise reduction, and echo cancellation
  • Can be hosted from anywhere
  • Offers dedicated mobile apps for Android and iOS
  • Allows you to easily store and share files with your community

What users like the most

  • Excellent audio quality
  • Easy-to-use interface

What it lacks

  • No calling options for non-TeamSpeak users

What’s Unique

An innovative VoIP solution is especially useful for gamers as it allows them to communicate well through state-of-the-art Key features.


The client and server apps are completely free and can be downloaded easily. They also have the following gaming license pricing plans:

  • 1 virtual server (64 slots): $55
  • 2 virtual servers (128 slots): $100
  • 2 virtual servers (256 slots): $175
  • 2 virtual servers (512 slots): $300
  • 2 virtual servers (1024 slots): $50

Tool #8. Discord

discordDiscord is a relatively new open source IVR software that has created quite a positive buzz with users, especially gamers that require a clean and intuitive interface. It specializes in text, video, image, and audio communication between users in a chat channel. 

As of now, there are more than 250 million users of the software.

Key features

  • Compatible with Windows, Android, macOS, iOS, Linux, and web browsers
  • Quite easy to install and set up
  • Offers tools to enable users create their own Internet bots
  • It is a secure and reliable platform

What users like the most

  • Has various API integrations
  • The sleek screen sharing feature

What it lacks

  • The support team could be more responsive

What’s Unique

Discord is basically focused on voice chat Key features and provides a suitable medium to gamers due to high quality and lag-free voice calls.


Discord is a free IVR software. You can upgrade the plan to the Nitro version for $4.99 per user per month. 

9. MobileVoIP

MobileVoIPMobileVoIP is a free app on the Windows Store that facilitates cheap and free calls to other MobileVoIP users, landlines, and mobiles.

It runs on iPhone, Android, and Windows. Besides, it is quite easy to install and use. After you download the app, register with their supported VoIP brand, and get started. 

Key features

  • Enables you to make economic VoIP calls to various international countries
  • Offers instant messaging and conferencing facilities
  • Supports over 70 VoIP providers 

What users like the most

  • Simple and user-friendly interface
  • Multi-platform integration

What it lacks

  • NA 

What’s Unique

MobileVoIP has jumped up the popularity charts due to its novel Key features such as call back, recording, and screen sharing.


MobileVoIP is a free open source IVR software that can easily be downloaded for personal or commercial use.

10. Viber

ViberViber is one of the most popular open source IVR software platforms for voice and video calling. Its simple interface and extensive functionality have contributed towards its popularity.

Besides, it runs on Android, iOS, Microsoft Windows, macOS, and Linux platforms.

Key features

  • Has a pre-built library of tens of thousands of stickers and GIFs 
  • Enables instant sharing of photos and files
  • Allows you to record quick-send video and voice messages 
  • Supports real-time group chat and newsfeed

What users like the most

  • Inexpensive voice and video calls
  • The responsive and full-time support team

What it lacks

  • Lack of security and privacy measures

What’s Unique

Viber can integrate with your phone address book. Hence it makes group chats and messages super easy and streamlined.


Viber provides free calling to other Viber users via computer and mobile. Using Viber to call other countries is extremely economical, mostly priced under $1 per minute.


Harnessing the power of a customer engagement software that is powered through VoIP technology is a smart move in the current competitive business scenario. 

Make sure to invest in one of the best free open source IVR software platforms to witness a radical transformation of your business communication instantly.

If you need any help in choosing the best IVR system for your business, you can contact us here.

SoftwareSuggest empowers businesses to discover top business software and service partners. Our software experts list, review, compare and offer a free consultation to help businesses find the right software and service solutions as per their requirement. We have helped 500,000+ businesses get the right software and services globally. Get a free consultation today!

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