Best Free Telephony Software of 2025

3CX is an open-standards, software-based IP PBX that provides complete Unified Communications right out of the box. 3CX is suitable for all industries and sizes. It can provide everything you need, from mobility and status to advanced call center features and more, at a fraction the cost. 3CX is ideal for remote companies and includes mobile apps, video conference, and website live chat. The installation, management, and maintenance of the PBX are so simple that you can easily manage it yourself, on your own appliance, server, or on a cloud-based platform. You can also choose to have it hosted on 3CX for an easy solution.

Phone Numbers Worldwide + Chat with Customers + Team Communication in one Free App. You can have your own local number in any country or city worldwide. Visitors to your website will be more likely to trust you and increase their sales if they have a local number. It's possible to get it free of charge if you also use our chat function on your website. Otherwise, prices start at $1.79/month. Calls can be answered free of charge in our new apps, or forwarded to any location worldwide at the same cost as a local call. Globalization and entrepreneurship are key drivers to making the planet a better place. We hope to make a difference by empowering entrepreneurs in remote parts of the world with communication solutions that reduce distance and level the playing field. Around 160,000 of the 170 countries that signed up have become paying customers.

Kixie: Smarter Calling & Texting for Revenue Teams Kixie is the AI-powered sales engagement platform that helps teams connect faster, close more deals, and scale effortlessly—all while keeping it personal. 🔥 Outbound Sales: Boost connection rates up to 400% with AI-powered Local Presence, Multi-Line PowerDialer, and Spam Risk Prevention. 🚀 Marketing: Automate calls & texts for instant follow-ups and high-converting outreach—without the manual work. 📞 Inbound Sales & CS: Handle more calls with smart CRM-based routing, shared SMS inboxes, and instant auto-replies. 📊 RevOps & Leadership: Get AI-driven insights, real-time coaching tools, and advanced analytics to level up your team. 💥 Supercharge your sales team today! Visit our website to get started for free, no credit card required.

WhatsApp offers a messaging platform that is fast, straightforward, secure, and free*, accessible on mobile devices globally. Designed with small business owners in mind, WhatsApp Business is available for download at no cost, allowing users to create catalogs that highlight their products and services. Furthermore, it provides tools that facilitate easy communication with customers by automating responses, sorting messages, and enabling quick replies. In addition to supporting small enterprises, WhatsApp also assists medium and large businesses in delivering customer support and crucial notifications. To discover more about the WhatsApp Business API, you can visit their website. Privacy is a priority on WhatsApp, which is why our latest app versions feature end-to-end encryption, ensuring that your most intimate conversations remain confidential. With this security measure, only you and your conversation partner can access your messages and calls, safeguarding them from interception by anyone else, including WhatsApp itself. This commitment to security reinforces our dedication to maintaining your privacy while you connect with others.

Business Phone system that doesn't require heavy wiring or hardware. Zadarma offers VoIP and Cloud PBX, CRM, website widgets and integration with top CRM systems. Virtual phone numbers in 100 countries around the globe are available for as low as $2 per month.

Stay connected, organized, and focused with a user-friendly phone solution designed for organizations of any size. With Voice, making work-related calls becomes a breezy experience. You can easily make and receive calls using a dedicated work number from any device, no matter your location. Begin to enhance your communication strategies today. Voice is adaptable, allowing you to tailor it to your daily tasks seamlessly. The processes for number assignment, porting, and billing are all streamlined within the user-friendly G Suite Admin console. Google's advanced AI technology helps filter out spam calls, automatically transcribes voicemails, and allows you to customize your PBX settings. Additionally, integrations with Hangouts Meet and Calendar ensure you remain focused on what truly matters. Voice can be rapidly deployed on a global scale from any location, significantly reducing the need for administrative overhead. Concentrate on your priorities while effortlessly staying connected through desk phones, smartphones, and web applications, making your workday more efficient than ever.

We effortlessly determine the optimal phone line for your call connection. Our ongoing analysis of traffic ensures that you receive the most affordable rates available. Thanks to the innovative Red Box, we tailor your experience to align with your specific needs and calling habits. We simplify international calling, making it both dependable and economical, all while considering your individual calling patterns. Begin your journey with Rebtel to enjoy budget-friendly international calls using our user-friendly app. It’s fast and incredibly straightforward. With Rebtel, you can connect any type of phone to any other phone, no matter where in the world you are. Our system enhances your international calling experience by utilizing local phone lines, which not only saves you money but also guarantees excellent call quality. Since we route your calls through local lines, you sidestep the need for an internet connection and the fear of dropped calls. This means you can enjoy the benefits of low international rates while experiencing the clarity and reliability of a local call. Plus, our service allows you to stay connected with loved ones across the globe without breaking the bank.

DID Global offers high-quality, efficient premium IP telephony for business and personal communication that allows you to scale quickly and save advertising budgets while increasing sales. We offer our clients attractive rates. Our working principles are based on the common phrase "price equals quality". You can save 60% on your advertising budget if you use local operators. If you call a prestigious local number, your clients will be more trusting. We only use high-quality, stable communication channels. You can switch to a different provider immediately if you lose your connection thanks to channel redundancy. This allows you to communicate with your customers while your business runs smoothly. We offer the best conditions to our customers in over 150 countries.

WeChat provides a versatile platform for messaging and sharing photos and videos, allowing you to connect effortlessly with loved ones no matter your location. With WeChat, you can quickly reach out to friends by searching for them using their WeChat ID or phone number, and once your connection request is accepted, chatting can commence right away. On Moments, users have the opportunity to post and share their cherished moments through photos and videos, while also keeping up with what their friends are sharing. Engage with friends and family in real time with WeChat's instant video and voice calling features, which are available for both one-on-one and group conversations. If you find it difficult to convey your feelings through text, you can always send a playful sticker to brighten up your chats. The Sticker Gallery, curated by skilled artists worldwide, offers a wide array of free stickers for users to download and send, making conversations even more enjoyable. Explore and choose your favorite stickers today to enhance your interactions with friends! Plus, WeChat continually updates its features, ensuring a dynamic and engaging user experience.

InstaVoice is revolutionizing the voice communication industry with its innovative mobile services available to carriers in 46 countries globally. Born from a blend of creativity, expertise, and the original creators of Voice SMS, the InstaVoice app aims to deliver a robust and dependable voicemail solution for users everywhere. Experience the convenience of listening, replying, and managing an infinite number of voicemails through a distinctive chat-like interface. Wave goodbye to those frustrating ‘Your-voicemail-is-full’ notifications! With unlimited storage, you can revisit all your voicemail messages from the past, regardless of whether you change carriers. Additionally, benefit from free Missed Call Alerts for each of your linked numbers, even if your device is turned off or out of reach. Your missed calls will be conveniently organized in the “Missed Calls” section, allowing you to return calls or respond with a voice or text message directly within the app. With InstaVoice, staying connected and on top of your communications has never been easier.

Experience the freedom of messaging anytime and anywhere! You can effortlessly send both individual and group messages to your friends across the globe, thanks to LINE's compatibility with various smartphone platforms such as iPhone, Android, Windows Phone, BlackBerry, and Nokia, in addition to being accessible on your PC. Make unlimited voice and video calls to your loved ones without worrying about the cost, as LINE allows for free international communication, ensuring you stay connected regardless of distance. This service is fully functional on devices like the iPhone, iPad, Android, Windows Phone, Windows PC, Mac, and also offers LINE Lite for Android users. Express your emotions creatively with over 10,000 unique stickers and emoticons, and don’t forget to explore the Sticker Shop for exclusive stickers featuring your favorite characters and celebrities. Moreover, LINE NEWS is the leading news curation platform in Asia, dedicated to providing content that adds value to your daily life. Additionally, if you're short on time or prefer to avoid crowded places, you can conveniently access medical consultations from the comfort of your own home. This comprehensive suite of features makes LINE an essential tool for communication and information.

VitalPBX is a unified communications PBX platform based on Asterisk (Centos 7). VitalPBX is a robust, scalable platform that will allow you to manage your PBX in a simple and intuitive manner. VitalPBX has a simple user interface and tooltips throughout the system. Telephony systems should be aware of security risks and take steps to avoid them. VitalPBX offers a variety of levels of protection against cyber threats in VoIP.

Bria offers a versatile softphone solution that enhances the functionality of your call server, PBX, or VoIP service, allowing you to answer calls seamlessly on both desktop and mobile platforms while also providing features such as team messaging, HD video conferencing, and screen sharing, all powered by CounterPath. Enjoy exceptional audio quality coupled with 1080p HD video calls, whether you're at your workplace or traveling, and take advantage of user-friendly features like call recording, music on hold, and seamless call transfers. For those seeking additional collaboration options, Bria Teams and Bria Enterprise provide advanced capabilities such as team messaging and screen sharing, facilitating HD video conferencing for up to 200 participants. With all your communication needs integrated into one user-friendly application, you can easily talk, chat, meet, and share information across devices while keeping your call and messaging history synchronized, ensuring you remain connected and informed. Discover more about Bria's offerings by visiting counterpath.com!

MyOperator is India's largest Call + WhatsApp platform, catering to 15000+ businesses including NCERT, Amazon, Lenskart, Apollo, and Myntra. Why MyOperator? MyOperator offers a range of products to boost communication and productivity, including integrated Call + WhatsApp, Cloud Contact Center, Office IVR, toll-free numbers, Campaign Management suite, Multi-store Solution, WhatsApp Business API, and advanced integrations: ✅ 15000+ Brands using Call + Whatsapp to cater to their customers ✅2.5+ Billion Conversations managed through MyOperator platform ✅ Highly rated on Google, G2, and Capterra ✅ 99.9% uptime with multi-geographu redundancy ✅ Automate service through Voice and WhatsApp bots ✅ Build intelligent WhatsApp campaigns/ auromations to engage customers ✅ Run customer service on VoIP-ready Contact Center with WhatsApp

Freshcaller is an affordable cloud-based software that allows businesses to connect with their customers. Freshcaller offers phone numbers in over 90 countries and allows customers to set up a contact center with just a few simple steps. Freshcaller integrates seamlessly with several CRM and Helpdesk software, allowing sales and support teams the ability to work together. Admins can gain real-time insight into the customer experience and agent productivity with powerful reporting and analytics. Agents can receive calls on their desktops or laptops (both Android and iOS), creating a fully connected but remote contact center. Admins have the option to add agent licenses, buy additional numbers, add credit for phone calls, and upgrade their pricing plan. Freshcaller is an extremely modern and reliable phone service that is trusted by more than 7000 customers worldwide.

PopTox allows users to make VoIP calls for free from their computers or smartphones using only WiFi or internet access. Accessible through any standard web browser, PopTox eliminates the need for app downloads or plugins, ensuring a seamless experience without any payment. To initiate your first free call, simply input the desired phone number and click the “Call” button. With this web-based free calling application, connecting online has never been easier. You can make calls as long as you have a modern browser, like Chrome, without any additional software. Upon visiting the PopTox homepage, you will encounter a user-friendly dialpad; just select your destination country from the dropdown menu and enter the number, omitting the country code. This straightforward process makes it simple for anyone to reach out without barriers.

Welcome to TENIOS, the cloud communications provider of the Apifonica Group. TENIOS is German-based and specializes in cutting-edge AI voicebots and telephony solutions for businesses. Their mission in short words: Bringing Conversational AI to the world. Their passion for automation unites a team of experts in Cloud Technology, Telephony, and AI to help businesses automate communication and related business workflows. TENIOS Voicebots handle outbound and inbound calls, call back leads, pre-qualifiy them, instantly update CRM data, and create reports to scale customer communications. The comprehensive telecom-platform offers services such as virtual phone numbers, intelligent call routing, interactive voice response (IVR) systems, SMS, RCS, and a robust Voice API for seamless integration of voice applications. With over two decades of experience and hosting in Germany, TENIOS ensures reliable and scalable communication solutions tailored to meet diverse business needs.

Effortlessly dispatch bulk text messages, automated phone calls, and emails to your entire contact list within moments. Begin your journey today by signing up for a free account! Our mass notification platform enables you to initiate automated phone calls to a designated list of numbers in just seconds. We simplify the process of creating, scheduling, and delivering your automated phone call to all your contacts simultaneously. Instantly and conveniently transmit mass text messages to an extensive list of phone numbers with our notification service. DialMyCalls provides options for both long code and short code text messaging, ensuring you can connect with your audience right away! With our complimentary bulk email feature, recipients can either listen to your recorded message or view your text via email. By adding email addresses to your contact list, you will be fully equipped to send out your mass notification! The mass notification solution from DialMyCalls is readily available on your preferred mobile device, allowing you to download the app and send notifications from virtually anywhere, ensuring you stay connected on the go.

Establish a dedicated work number, streamline your contacts, and elevate your business using the robust texting capabilities offered by Sideline Pro. This service ensures that all your professional calls, messages, and voicemails are managed through a unique number, safeguarding your personal line from interference. Stay informed when customers reach out, automate your replies, and handle each interaction with expertise. Research shows that 90% of consumers prefer texting over calling businesses, and Sideline equips you with everything necessary to facilitate this communication. Acquire a dedicated line for calls, texts, voicemails, and additional features while maintaining a clear separation between your work and personal contact lists, all accessible from a single device. If you happen to miss a call, the customer receives an immediate text, connecting you before they have the chance to find alternatives. Utilize mass messaging tools to launch text marketing campaigns, promotions, or special offers. Additionally, schedule text reminders via your work calendar to minimize the chances of missed appointments and meetings, thereby enhancing your overall operational efficiency. By adopting these strategies, you can not only improve customer engagement but also foster stronger relationships with your clientele, ultimately driving business growth.

The term "Free" in FreePBX signifies Freedom, highlighting that FreePBX, the leading open-source IP PBX solution globally, empowers users to create a customized phone system that meets their specific requirements. Explore the potential of open-source communication and examine the extensive range of features that FreePBX provides to help you construct your ideal phone system. By integrating commercial modules from Sangoma and various other add-ons, you can elevate your FreePBX installation into a powerful Unified Communications platform. Don't forget to check the Knowledge Base on the FreePBX Wiki for additional resources! Alternatively, you can reach out to FreePBX professionals for assistance with installation, updates, troubleshooting, and more. Available for free download and use, FreePBX's strength is supported by a worldwide community of developers dedicated to maintaining its high compatibility and customizable nature, ensuring it delivers all the essential functions needed to create a scalable business phone system that accommodates any budget. This collaborative effort fosters innovation and continuous improvement, making FreePBX a reliable choice for communication needs.

Introducing an unparalleled UCaaS solution crafted to drive the success of Service Providers. Stand out in the competitive landscape by utilizing a fully customizable white label offering that enhances your brand identity. KAZOO, the comprehensive UC platform from 2600Hz, provides the adaptability essential for delivering an exceptional communication experience. Equip your clients with a communication solution that fosters their achievements. With over 300 APIs at your disposal, you can tailor a solution that empowers your customers to enhance their business operations. Customizing your offering under your own brand allows you to strengthen your market presence. The low initial investment facilitates a swift launch while ensuring you remain price competitive. With robust reliability and geo-redundancy features, your clients will experience uninterrupted service. The mobile-ready functionality allows your customers to conduct business anytime and anywhere. KAZOO operates as a multi-tenant platform, giving you the opportunity to diversify your sales strategies. You can opt to onboard resellers, sell directly, or implement an agent model to maximize your reach. This flexibility can significantly enhance your operational capabilities and service offerings.

CheckMyNumber helps: - Parsing, formatting, and validating phone numbers for all countries/regions of the world directly in Salesforce. - Gets the type of the number based on the number itself; able to distinguish Fixed-line, Mobile, Toll-free, Premium Rate, Shared Cost, VoIP, Personal Numbers, UAN, Pager, and Voicemail (whenever feasible). - Gets a confidence level on whether two numbers could be the same.

TekSIP for Windows is a SIP Registrar as well as a SIP Proxy. TekSIP supports UDP (IPv4 & IPv6), TCP (IPv4 & IPv6), TLS, and WebSocket transports. Only commercial editions support Secure WebSocket and TLS. TekSIP has been tested on Microsoft Windows Vista and Windows 7/8/10/11 servers. TekSIP is a signaling service for WebRTC based SIP-based phones. TekSIP is compliant with RFC 3261 and RFC 3263. It also complies to RFC 3581, RFC 3891, RFC 3311 and RFC 3481. It supports NAT traversal, ENUM. Please refer to Readme for technical details on NAT traversal. You can choose the IP address that will be listened to and alternative SIP endpoints when making outgoing calls. You can also log the session details in a log and monitor registrations and active sessions in real-time. Windows Performance Monitor (Perfmon.exe) allows you to monitor the number of active sessions and registrations. TekSIP redirects calls to an alternate endpoint if the called endpoint is not available (Offline, busy ...). GUI can be used to terminate an active SIP session.

Are you looking for a business phone system that is affordable and reliable? It would be great to spend more time with your customers than waiting on hold with your provider every little change. FluentStream is your home! FluentStream is committed to being the best business communication system. No-contract plans are available for all accounts. We provide 24/7 client support. We will be there for you throughout the onboarding process. We understand how difficult phone setup can be. We're happy to take over the heavy lifting so that you don't have too. It's all part and parcel of being the easiest business to work with.

VoipNow serves as a comprehensive cloud communications solution designed specifically for service providers and businesses that require a powerful enterprise PBX system. This platform encompasses a wide array of features, including voice, video, presence, instant messaging, conferencing, faxing, and contact center capabilities, ensuring an all-encompassing communication experience. As a result, organizations can easily manage their communication needs through a single, integrated platform.