7 Best FREE VoIP Software (2025)

Free VoIP apps can be useful for acquiring extra numbers for managing your inbox and numbers for different purposes. They offers local, domestic and international calls and text messaging. However, free VoIP apps may sometimes have hidden upsells, or their feature set may be limited and may not be ideal for your business use case. Or in case you find an entirely free app, it may lack in security features, call quality, etc.

Hence, with over 100 hours of in-depth research, I have evaluated 40+ best free VoIP software solutions and highlighted the most credible and secure options. My comprehensive and trusted guide provides insightful and well-researched article. This ultimate review will help you choose the perfect VoIP phone service. You can now read the full article to discover exclusive insights and pros and cons. Read more…

Best Free VoIP Phone Number Software Providers

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

Expert Advice:

“ Many free VoIP software do not allow you to port your existing phone number or number from another softphone provider. If the service quality is poor, you will be stuck with a number that you have already marketed to your customers. Avoid such issues by not focusing on just free services and choosing your tool well.”

1) Skype

Best for making free and secure calls

Skype is a web-based VoIP tool that connects directly to Facebook and Microsoft. During my research, I found it specializes in instant messaging, audio and video chats, group texting, and file sharing. Skype also provides live subtitles for reading spoken words during calls.

It ranks as one of the best VoIP software with a real-time call translator. I found out that Skype supports various languages such as English, Danish, Spanish, Bulgarian, French, and 33+ additional languages. This tool is best known for its video conferencing where you can add up to 100 participants. The basic version lets users make free Skype-to-Skype calls, while its business plan Business offers flexible pricing plans. I suggest Skype for individuals and business teams to communicate through on-premises deployment.

Features:

Call Recording: You can easily capture special moments by recording Skype calls, preserving important conversations. I could also use these recordings to evaluate meetings later and train my team.
Smart Messaging: It offers smart messaging that lets you use @mentions to react to messages, keeping conversations organized.
Privacy Protection: Skype provides end-to-end encryption, allowing users to keep sensitive information private and secure.
Screen Sharing: It helped me share my screen during a conference and meetings, which enhanced collaboration and efficiency.
International Calling: Skype has a phone call feature that makes international calls to mobiles and landlines easily accessible.
Call Forwarding: I could set up an option to forward Skype calls to voicemail. This also helped me forward calls to landlines and other phones with just a click.
Unlimited Calling: You pay a flat fee for unlimited phone calls with the Skype local number, which saves you money.
Third-Party Integrations: Integrations include Pipedrive, Microsoft 365, and Microsoft Dynamics for enhanced functionality.
Device Compatibility: It supports mobile devices, computers, landlines, smartwatches, and Xbox One consoles for versatile communication.

Pros

I received high-definition audio and video calls, making communication crystal clear
I enjoyed customizing stickers and GIFs, adding a personal touch to my messages
Skype generates a caller ID for messages and calls
Sharing location with friends and family is easy

Cons

I was frustrated by the ads on Skype, which disrupted my experience
It takes a longer time to download large group chats

👉 How to get it Free?

Go to https://www.skype.com/en/
Click on the “Download Skype” button to download the free version of Skype on your Desktop or Mobile.

Visit Skype >>

2) 3CX

Best for Presentation and remote assistance

I reviewed 3CX and found it to be one of the best VoIP phone service solutions for businesses, teams, and solo entrepreneurs. This top VoIP software supports voicemail, text messaging, live chat, and video calls. I could access it on Google Cloud, Azure, and Amazon accounts. It also offers on-premises deployment for Windows and Linux users.

It provides third-party integrations including Freshdesk, Salesforce, HubSpot, Zendesk, and Microsoft 365. The call management features such as queuing, automatic callbacks, and call blasting impressed me. I noticed that users can switch from chat to face-to-face communication in real time. The notifications feature is also great for lead generation and sales conversion.

Features:

Call Routing: The system allows you to route calls based on the number or custom question effectively. This helps your clients reach the right extension or an available phone number and resolve their issues easily.
Automatic Contact Creation: It automatically creates new contacts for new numbers, ensuring seamless communication management.
Personalized Greetings: I could create personalized greetings to answer callers and attract new leads effortlessly.
Ring Groups Setup: You can set up ring groups to efficiently accept multiple calls at the same time. This helped me manage high call volumes seamlessly.
Auto-Attendant Voice Menu: It has an auto-attendant voice menu to direct callers to the right representative promptly.
Customer Service Records: 3CX generates customer service records and journal calls for future reference, providing comprehensive support.
Call Log Access: I could conveniently access all customer call log details and history from the dashboard. It allowed me to review interactions easily.
Multi-Language Support: 3CX supports English, Deutsche, Spanish, French, Italian, and other languages.
Video Conferencing: Video conferencing supports up to 100 participants, making it perfect for large meetings.
Mobile and Desk Apps: Mobile and desk apps are also available for Android and iOS devices, enhancing accessibility.
Customer Support Options: I received assistance from customer support via webinars, online courses, tickets, instant chat, FAQs, and e-guides.

Pros

3CX has automated upgrades and backups
I liked that I could build phone surveys to test callers’ satisfaction
I was able to have multiple users share the same local or remote-connected IP Phones.
The platform provides chat reporting with participants’ details.

Cons

I found myself dissatisfied with the lack of notifications when forwarding a call

👉 How to get it Free?

Go to https://www.3cx.com/signup/
Click on the “Start Trial Now” button to get a 2-month trial of 3CX PRO (No credit card required)
Also, 3CX offers a lifetime free basic plan for up to 10 users.

Visit 3CX >>

3) Jitsi

Best multiplatform voice and video conferencing

Jitsi stands out as the best free VoIP software that excels in creating secure virtual meeting rooms. I noticed that it provides features like dial-in, scalable video coding, and bandwidth estimations.

I could also lock rooms to restrict late attendees and manage participants by muting or removing them. The talk-time statistics are easy to access, and the toggle tile view helps see the entire team. It supports video conferencing for up to 100 participants and more than 30 languages, including English, Romanian, Greek, French, and German.

Features:

Custom URL for Invitations: I could create a custom URL to invite participants to a conference. This also made my URLs more precise and presentable while conducting meetings with high-profile clients.
Screen Sharing: You can share external applications and presentations with co-workers using Jitsi screen sharing. It allowed me to have more efficient conversations and productive meeting sessions.
Telephony Module: The telephony module enables you to use audio phone calls to invite participants.
Note-Taking: It has an Etherpad that facilitates note-taking during meetings. I could also access meeting notes easily after the session.
Restrict Late Attendees: Users can restrict late attendees from joining sessions by creating locker rooms.
Video Routing: Jitsi has advanced video routing support for the simulcast, enhancing video quality.
Picture-in-Picture Mode: It allowed me to use many applications at once by enabling the picture-in-picture (PIP) mode.
Emojis and Messages: You can send emojis and messages during video conferencing, making interactions more engaging.
Free Accessibility: It is free to use on the F-Droid, web, iOS, and Android, ensuring wide accessibility.

Pros

End-to-end encryptions to keep your conversations secure
It has a car mode to enable meets even when driving
I liked that the virtual rooms are password-protected
I discovered that users can set up conference recordings and live streams easily

Cons

I was disappointed there is no option to share files
You may experience audio delays during the meetings

👉 How to get it Free?

Go to https://jitsi.org/
Click on the “Start Meeting” button for free video conferencing.

Visit Jitsi >>

4) Google Voice

Best for calling from a web browser

I tested Google Voice and found it to be one of the most effective VoIP services. It offered me seamless management of voicemail, text, and voice messaging. The mobile application and desktop interface are ideal for any device. With management tools like call queues, logs, and transfers, I could keep everything organized. During my research, I discovered that forwarding calls to another number is simple, even with 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:

Real-Time Voicemail Transcription: It transcribes voicemails into readable texts in real time. Therefore, it ensures that you get the voicemail even if you cannot play it right away.
Spam Call Filtering: Google Voice can filter and block unwanted or spam calls. Thus, making sure, only important calls reach you without interrupting your workflow.
Multiple Call Acceptance: It helps you accept multiple calls at the same time using the ring groups feature.
Caller Screening: Google Voice can screen calls to get callers’ information before you answer. It allows you to prioritize important calls and decide how to address the caller.
Personalized Greetings: I was able to personalize greetings to answer or advertise my products to callers.
Do Not Disturb Mode: It can create “Do not disturb” based on calendar working hours.
Free Local Phone Number: Customers can get a free Google phone number with a local area code. It offered me a local number without any extra cost.
Call Recording and Downloading: You can record and download calls and then access them anytime on your account.
Phone Number Porting: It helped me port existing phone numbers without changing devices.
Third-Party Integrations: Third-party integrations include Google Calendar, Gmail, and Google Meet.
Multi-Language Support: Google Voice supports languages such as English, German, Spanish, Portuguese, French, and 7+ languages.

Pros

The system allows you to add credit to make calls
Users can make international VoIP calls at low rates
I found out that it allows accurate caller identification
I liked that it did not require a phone number to verify my account

Cons

The voicemail transcription is sometimes not very accurate
I was unhappy that it only offers free US phone numbers

👉 How to get it Free?

Go to https://voice.google.com/about
Select a business phone and start your free 14-day trial.

Visit Google Voice >>

5) Linphone

Best for instant message delivery

During my evaluation, I found out that Linphone is an open-source VoIP system suitable for small, medium, and large businesses. It simplifies communication through voice, instant messaging, and video calls. Linphone provides free SIP video and audio services and works with most SIP servers and PBXs.

Key features of Linphone are call recording, call transfer, and call forwarding. It offers two-way user authentication using the secure real-time transport protocol (SRTP). Linphone allows group chats with multiple participants. I could access sales performance through call analysis. Linphone includes mobile apps for iOS and Android devices.

Features:

Bitrate Adaptation and Jitter Buffer: This feature optimizes audio and video quality through bitrate adaptation algorithms and jitter buffer.
Address Book Synchronization: It provides address book synchronization and a smart contact list for smartphones. This helped me keep my contacts in an organized manner.
Instant Message Notifications: Linphone offers the “mark as read” and “reply to” options directly in its instant message notifications.
Audio Conference Calls: The platform allows for audio conference calls with up to eight participants. This is perfect for conducting meetings for a small team.
Call and Chat History: I could instantly access recent events with the call and chat history feature.
Multiple Call Management: It helped me manage multiple calls efficiently by pausing, resuming, or transferring them as needed.
Advanced Call Statistics: Linphone displays advanced call statistics and has an indicator for call quality to ensure optimal performance.
Remote Provisioning: The system supports remote provisioning from a URL or QR Code, providing flexibility and ease of setup.
Typing and Delivery Status: You can see “is typing” and an intuitive message delivery status for better communication.
File Sharing and Settings Configuration: It allowed me to share files and configure settings to download attachments, enhancing collaboration.
Multilingual Support: Linphone supports multiple languages, including English, Japanese, Russian, Arabic, and French.

Pros

Linphone has end-to-end encryption for every conversation
It has an intelligent search bar to ease communications
I was able to access chat views during calls, which made multitasking easy
I found that inviting friends to my Linphone account was effortless

Cons

Call recording and replay work with the audio only
I was disappointed that it did not have a call-forwarding button

👉 How to get it Free?

Go to https://www.linphone.org/
Click on the download button to install Linphone on your device. Linphone is available for free under a GNU GPLv3 license, offering open-source video conferencing.

Visit Linphone >>

6) MicroSIP

Best for making calls over an SIP softphone

MicroSIP is a VoIP phone freeware for Windows operating systems. I reviewed MicroSIP and found out that it uses an open SIP protocol, which allows free calls to landlines and mobiles. I particularly appreciate its portability, as it can be installed onto a USB thumb drive. You can move the application between machines because it runs on any device.

MicroSIP also supports Transport Layer Security (TLS) for secure authentication, in addition to voice, video, and messaging. It adheres to SIP standards and saves files in a set format rather than in the Windows registry. MicroSIP supports many languages, including English, Spanish, Arabic, Portuguese, French, Italian, and other 57 more.

Features:

Voice Activity Detection: It has voice activity detection and a Web real-time communication echo cancellation algorithm. This provided clear audio at all times.
Accessibility: People with visual impairments can use screen reader software to access MicroSip. According to my experience, this feature is essential since it pays attention to diverse needs.
Password Security: You can remove the option to display passwords for existing accounts. Which ensures high-level security
Auto-Answer: You can use Wildcast to auto-answer multiple caller numbers. I could use this to attend to clients during rush hours.
On-Hold Music: The system can play music for contacts who are waiting on hold. It is a great option for keeping customers engaged.
Conference Call Recordings: MicroSIP allowed me to access conference call recordings and replay them in one file.
Screen Sharing: You can share screens over the Internet and stream presentations, which may help in remote collaboration.
Customer Support: I could contact its customer support through phone and email. It also offers FAQs and e-guides, providing comprehensive support for any issues or questions.

Pros

I liked that you get free person-to-person calls
End-to-end media encryptions to keep conversations private
It helped me answer video calls without turning on the video
MicroSIP generated the caller ID before answering a call

Cons

I found it frustrating that it only works on Windows operating systems

👉 How to get it Free?

Go to https://www.microsip.org/
Click on the download menu button to install MicroSIP, an open-source portable SIP softphone based on the PJSIP stack, for Windows OS.

Visit MicroSIP >>

7) Ekiga

Best for free internet telephone service

I evaluated Ekiga, a free, open-source phone system, and noticed that it supports video conferencing and instant messaging. It uses a modern GUI and Voice over Internet Protocol like H.323 and includes advanced features like echo cancellation.

This VoIP service works with standard service, hardware, and software providers. It has a mobile app for making and receiving calls on the go. I could use it on both Windows and Linux platforms. Ekiga includes audio and video codecs like MPEG4, H.263+, and H.264.

Features:

User List Management: The system loads the list of users from both remote and local address books, ensuring efficient access. Thus, helping you keep an organized address book.
Call History: You will get a call history on all outgoing and incoming calls, providing a comprehensive overview. I could view the date, time, duration and contact information.
Voicemail Indications: It shows incoming voicemails using its message waiting for indications support, keeping you updated.
Auto Answer Setup: I could set up call auto-answer to automatically respond to all incoming calls.
Call Hold: You can pause video and audio transmission using the call hold feature, offering flexible communication.
Dial Pad Utilization: It allows you to utilize a graphical alphanumeric keypad to dial numbers using a dial pad for convenience.
Presence Display: Ekiga lets you view your contact’s presence displays via their online status, ensuring seamless connectivity.
Call Monitoring: I could monitor calls on the status bar and get insights about my network traffic for better management.

Pros

It allows you to switch to a full-screen video
Users can make calls to mobile phones and landlines at low fees
I noticed that the HD video calling and sound quality are impressive
I like that you can transfer the remote user to an available agent

Cons

I was frustrated by the lack of call-binding and music-on-hold functions
Codec-caused jittering corrupts voice signals when making calls over Wi-Fi

👉 How to get it Free?

Go to https://www.ekiga.org/
Click on the download menu button to install Ekiga, an open-source softphone, video conferencing, and instant messenger.

Visit Ekiga >>

What to look for in a free VoIP software?

Selecting free VoIP service providers is a big deal as there are many features and service levels. I suggest going for a phone system that will fit your requirements as your business grows.

Here are some key factors that should be considered:

Cost: The cost of VoIP apps is generally less than traditional phone systems. Check that your VoIP provider has the potential to save you money on telephony costs. However, if you are unsure about the price plans, talk to your VoIP provider.
Features: The VoIP phone freeware should offer collaboration tools to help you meet, interact, and work online. It should have basic features like call forwarding, business SMS, mobile apps, voicemail, and more. Furthermore, consider one with a free VoIP PBX if you are just starting your business.
Two-Factor Authentication (2FA): A growing number of cyber-attacks target VoIP apps. Therefore, advanced authentication options like two-factor authentication and biometrics should be considered.
Reliability and support: Go for a system that provides 24/7 phone support and answers your questions immediately.
User Experience: VoIP software should have a good reputation among its users. You can get this in online user reviews from various software and tech sites.
Integrations: It should have pre-built integrations to connect to other business applications. By working with your existing services, you will not need to migrate business data from one system to another.
Versatility: The VoIP system should allow you to place calls and talk using handsets and headsets. Some systems come with free VoIP phones, while others let you connect your existing phones.
Security: An ideal VoIP app should maintain confidentiality and have comprehensive security measures. It should be able to protect sensitive data without any third-party interference.

Verdict

For the best free VoIP software, I have extensively explored various options and identified top choices. If you are deciding on the right VoIP solution, check my verdict for insights on the most reliable and user-friendly options available. My verdict is based on practical experience with these tools.

Skype offers a user-friendly interface and is widely used for personal and professional communication, making it ideal for both individual and business needs. According to my review, its tone selection for texting and high-quality voice calls are some of its best features.
3CX provides a reliable and secure VoIP platform with customizable and cost-effective plans, thus making it the right choice for businesses of all sizes. Its call and chat reports, along with Microsoft 365 integration, also make it valuable software.
Jitsi is a reliable and comprehensive open-source VoIP software that excels in providing secure and customizable communication solutions. I also liked its meeting locker and custom URL features that stand out as its unique capabilities.

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