7 Best FREE VoIP Software (2023)

Free VoIP apps may sometimes have hidden upsells. Their feature set may be limited and may not be ideal for your business use case.

We have researched 33+ tools and selected the best VoIP software based on scalability, security, user reviews, and usability. Here is an exclusive list of the 8 top free and open-source VoIP software which are easy to configure, maintain, and install.

Best Free VoIP Software & Calling App

Tool Name	Languages Provided	CRM Integration	Softphone	Free Trial	Links
Skype	English, Danish, Spanish, Bulgarian, French, and 33+ languages	Yes	Available	Free	Learn More
3CX	English, Deutsche, Spanish, French, Italian, and 3+ languages	Yes	No	Free Basic Plan	Learn More
Jitsi	English, Romanian, Greek, French, Austrian, and 30+ languages.	Yes	Available	Free	Learn More
Google Voice	English, German, Spanish, Portuguese, French, and 7+ languages	Yes	Available	Free Basic Plan	Learn More
Linphone	English, Japanese, Russian, Arabic, Japanese, and French.	No	Available	Lifetime Free Basic Plan	Learn More

 

1) Skype – Best for Making free and secure calls

Skype is a web-based VoIP tool with direct support for Facebook and Microsoft. It specializes in instant messaging, audio, video chat, group texting, and file sharing. It has live subtitles to help with reading the spoken words.

Skype is one of the best VoIP software with a built-in translator that translates phone calls in real time. The basic version offers Skype-to-Skype calls for free. There is also Skype for business, which has very flexible pricing. This solution empowers individuals and business teams to communicate over on-premises deployment.

Features:

• Capture special moments by recording Skype calls.
• Smart messaging lets you use @mentions to react to messages.
• It supports mobile devices, computers, landlines, smartwatches, and Xbox One consoles.
• End-to-end encryption allows users to keep sensitive information private.
• Lets you share your screen presentations during a call.
• It has a call phone feature that makes international calls to mobiles and landlines.
• The platform allows you to monitor and track online orders.
• Set up an option to forward Skype calls to voicemail.
• Users get a flat fee for unlimited phone calls with the Skype local number.
• Third-party integrations include Pipedrive, Microsoft 365, and Microsoft Dynamics.

👍 Pros	👎 Cons
It offers high-definition audio and video calls.	Skype has ads that can be frustrating.
You can customize stickers and GIFs on your own.	It takes a longer time to download large group chats.
Skype generates a caller ID for messages and calls.
Sharing location with friends and family is easy.

Key Specs:

Skype supports the following languages: English, Danish, Spanish, Bulgarian, French, and 33+ languages.
Video Conferencing: Up to 100 participants
Customer Support: FAQs and e-guides.
Pricing: Lifetime Free Basic Plan.

Link: https://www.skype.com/en/

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2) 3CX – Best for Presentation and remote assistance

3CX provides phone system VoIP solutions for businesses, teams, and solo entrepreneurs. It is one of the best VOIP software that supports voicemail, text messaging, live chat, and built-in video calls. 3CX is available on the cloud for Google, Azure, and Amazon accounts. On-premises deployment is available for Windows as well as Linux users.

The software offers call management features like queuing, automatic callbacks, and call blasting. You can switch from chat conversations to face-to-face communication in real time. Moreover, you get notifications, which is helpful in lead generation and the conversion process for sales.

Features:

• The system allows you to route calls based on the number or custom question.
• It automatically creates new contacts for new numbers.
• Create personalized greetings to answer callers and attract new leads.
• Set up ring groups so that you can accept multiple calls at the same time.
• It has an auto-attendant voice menu to direct callers to the right representative.
• 3CX generates customer service records and journal calls for future reference.
• You can access all customer call log details and history from the dashboard.
• Mobile and desk apps are also available for Android and iOS devices.
• Third-party integrations include Freshdesk, Salesforce, HubSpot, Zendesk, Microsoft 365, and more.

👍 Pros	👎 Cons
3CX has automated upgrades and backups.	No notification when you forward a call.
It allows you to build phone surveys to test callers’ satisfaction.
Multiple users can use the same local or remote-connected IP Phones.
The platform provides chat reporting with participants’ details.

Key Specs:

3CX supports the following languages: English, Deutsche, Spanish, French, Italian, and 3+ languages.
Video Conferencing: Up to 100 participants
Customer Support: Webinar, online course, tickets, instant chat, FAQs, and e-guides.
Pricing: Plans starting at $175 per year.
Free Trial: Lifetime Free Basic Plan

Link: https://www.3cx.com/

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3) Jitsi – Best Multiplatform voice and Video Conferencing

Jitsi is a set of communication projects with Web Real-Time Communication (WebRTC) capability. This platform helps businesses create virtual password-protected meeting rooms to host video calls. It also offers advanced video routing concepts such as dial-in, scalable video coding, and bandwidth estimations.

It also allows administrators to create lock rooms to restrict late attendees from joining sessions. You can also mute or remove participants and gain insights into the talk-time statistics. Moreover, you can gain visibility of the entire team using the toggle tile view.

Features:

• Users can create a custom URL to invite participants to a conference.
• You can share external applications and presentations with co-workers using Jitsi screen sharing.
• The telephony module enables you to use audio phone calls to invite participants.
• It has an Etherpad that facilitates note-taking during meetings.
• Users can restrict late attendees from joining sessions by creating locker rooms.
• Jitsi has advanced video routing support for the simulcast.
• You can use many applications at once by enabling the picture-in-picture (PIP) mode.
• Users can send emojis and messages during video conferencing.
• It is free to use on the F- Droid, web, iOS, or Android app.

👍 Pros	👎 Cons
End-to-end encryptions to keep your conversations secure.	There is no option to share files.
It has a car mode to enable meets even when driving.	You may experience audio delays during the meetings.
The virtual rooms are password-protected.
Users can set up conference recordings and live streams.

Key Specs:

Jitsi supports the following languages: English, Romanian, Greek, French, Austrian, and 30+ languages.
Video Conferencing: Up to 100 participants
Customer Support: FAQs and e-guides.
Pricing: Lifetime Free Basic Plan

Link: https://jitsi.org/

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4) Google Voice – Best for Calling from a Web Browser

Google Voice is a VoIP telephone service that offers voicemail, text, and voice messaging services. It comes with a mobile application and an interface for tablets and desktops. Google Voice management tools include call queues, logs, and transfers. You can also forward calls to another number while managing a high volume of calls.

This platform provides a virtual business phone number to help merge communications channels. Google Voice comes with a free plan for personal usage for those with Google accounts.

Features:

• It transcribes voicemails into readable texts in real time.
• Google Voice can filter and block unwanted or spam calls.
• Accept multiple calls at the same time using the ring groups feature.
• Screen calls to get callers’ information before you answer.
• You can personalize greetings to answer or advertise your products to callers.
• It can create “Do not disturb” based on Calendar working hours.
• Customers can get a free google phone number with a local area code.
• Users can record and download calls, then access them anytime on their account.
• Port an existing phone number without changing devices.
• Third-party integrations include Google Calendar, Gmail, and Google Meet.

👍 Pros	👎 Cons
The system allows you to add credit to make calls.	The transcription is sometimes not very accurate.
Users can make international VoIP calls at low rates.	It offers only free US phone numbers.
Allows for accurate caller identification.
You do not have to use a phone number to verify your account.

Key Specs:

Google Voice supports the following languages: English, German, Spanish, Portuguese, French, and 7+ languages.
Video Conferencing: Up to four participants
Customer Support: FAQs, video tutorials, instant chat, and e-guides.
Pricing: Plan stating $6 a month.
Free Trial: Lifetime Free Basic Plan

Link: https://voice.google.com/u/0/about

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5) Linphone – Best for Instant Message Delivery

Linphone is an open-source VoIP system for businesses of all sizes. It helps to streamline communication via voice, instant messaging, and video calls. Linphone offers free SIP video/audio services and is compatible with most SIP servers and PBXs.

The essential features of Linphone include call recording, call transfer, and call forwarding. It also has a two-way user authentication through the secure real-time transport protocol (SRTP). The solution enables members to chat with multiple participants in a group. You can also gain an overview of sales performance through call analysis.

Features:

• It has bitrate adaptation algorithms and a jitter buffer to optimize audio and video quality
• You get address book synchronization and a smart contact list for smartphones.
• Linphone provides “mark as read” and “reply to” options from its instant message notifications.
• The platform offers audio conference calls with up to eight participants.
• You can quickly access your recent events with call and chat history.
• Users can manage multiple calls by pausing, resuming, or transferring.
• It displays advanced call statistics and has an indicator for call quality.
• The system has remote provisioning from a URL or a QR Code.
• You can see “is typing” alerts and an intuitive message delivery status.
• It allows users to share files and configure settings to download attachments.
• The system comes with mobile apps for iOS and Android devices.

👍 Pros	👎 Cons
Linphone has end-to-end encryption for every conversation.	Call recording and replay work with the audio only.
It has an intelligent search bar to ease communications.	It does not have a call forwarding button.
Users can access chat views during calls.
You can easily invite friends to your Linphone account.

Key Specs:

Linphone supports the following languages: English, Japanese, Russian, Arabic, Japanese, and French.
Video Conferencing: Up to eight participants
Customer Support: Phone, email, FAQs, and e-guides.
Pricing: Lifetime Free Basic Plan

Link: https://www.linphone.org/

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6) MicroSIP – Best for Making calls over SIP softphone

MicroSIP is a VoIP phone freeware for Windows operating systems. This system uses an open SIP protocol to make free calls to landlines and mobiles. It is portable and can be installed onto a USB thumb drive. You can port the application from one machine to another since it can run on any device.

Besides voice, video, and messaging, MicroSIP supports Transport Layer Security (TLS) for Authentication. It follows SIP standards and stores files in a predefined format instead of being held in the Windows registry.

Features:

• It has voice activity detection and Web Real-Time Communication echo cancellation algorithm.
• People with visual impairments can use screen reader software to access MicroSip.
• Users can remove the option to display passwords for existing accounts.
• You can use Wildcast to auto-answer multiple caller numbers.
• The system can play music for contacts who are waiting on hold.
• MicroSIP allows you to access conference call recordings and replay them in one file.
• You can share screens over the internet and stream presentations.

👍 Pros	👎 Cons
You get free person-to-person calls.	It only works on Windows operating systems.
End-to-end media encryptions to keep conversations private.
It can answer video calls without turning on the video.
MicroSIP generated the caller ID before answering a call.

Key Specs:

MicroSIP supports the following languages: English, Spanish, Arabic, Portuguese, French, Italian, and 57+ languages.
Video Conferencing: N/A
Customer Support: Phone, email, FAQs, and e-guides.
Pricing: Lifetime Free Basic Plan

Link: https://www.microsip.org/

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7) Ekiga – Best for Free Internet telephony

Ekiga is a free, open-source business phone system for video conferencing and instant messaging services. It uses a GUI graphical user interface and a modern Voice over internet protocol like H.323.

This VOIP service is compatible with standard-compliant service, hardware, and software providers. It also has a mobile app to let you make and receive calls on the go. Moreover, it supports both Windows and Linux platforms. Ekiga audio and video codecs include MPEG4, H.263+, and H.264 with echo cancellation.

Features:

• It shows incoming Voicemails using its message waiting for indications support.
• The system loads the list of users from a remote and local address book
• You will get a call history on all outgoing and incoming calls.
• Set up call auto answer to automatically respond to all incoming calls.
• You can pause video and audio transmission using the call hold feature.
• It allows you to utilize a graphical alphanumeric keypad to dial numbers using a dial pad.
• Ekiga lets you view your contact’s presence displays via their online status.
• Monitor calls on the status bar and gets insights about your network traffic.

👍 Pros	👎 Cons
It allows you to switch to a full-screen video.	It does not have call binding and music on hold functions.
Users can make calls to mobile phones and landlines at low fees.	Codec-caused jittering corrupts voice signals when making calls over WI-FI.
HD video calling and sound quality.
You can transfer the remote user to an available agent.

Key Specs:

Google Voice supports the following languages: English, Spanish, Arabic, Portuguese, French, Italian, and 57+ languages.
Video Conferencing: Up to 10 participants
Customer Support: FAQs, email, and e-guides.
Pricing: Lifetime Free Basic Plan

Link: https://www.ekiga.org/

FAQs

Best Free VoIP Software

Tool Name	Languages Provided	CRM Integration	Softphone	Free Trial	Links
Skype	English, Danish, Spanish, Bulgarian, French, and 33+ languages	Yes	Available	Free	Learn More
3CX	English, Deutsche, Spanish, French, Italian, and 3+ languages	Yes	No	Free Basic Plan	Learn More
Jitsi	English, Romanian, Greek, French, Austrian, and 30+ languages.	Yes	Available	Free	Learn More
Google Voice	English, German, Spanish, Portuguese, French, and 7+ languages	Yes	Available	Free Basic Plan	Learn More
Linphone	English, Japanese, Russian, Arabic, Japanese, and French.	No	Available	Lifetime Free Basic Plan	Learn More