List of the Top 5 Business VoIP Providers for Telnyx in 2025

3CX is a versatile, software-driven IP PBX built on open standards that delivers comprehensive Unified Communications straight out of the box. It caters to businesses of all sizes and across various sectors, offering a full suite of features that range from mobility and presence indicators to sophisticated call center functionalities, all at a significantly reduced cost. This platform is particularly well-suited for remote work environments, featuring mobile applications, video conferencing capabilities, and live chat integration for websites. Installation, management, and maintenance of the PBX are straightforward, allowing users to easily handle it themselves on their own hardware, a dedicated server, or via a cloud environment. Alternatively, users can opt for 3CX's hosting services to simplify their setup even further. With its user-friendly design and extensive feature set, 3CX empowers companies to enhance their communication strategies effectively.

UltraSMSScript is an innovative and user-friendly web-based SMS marketing software designed for group messaging. You can choose to install UltraSMSScript on your own server by paying a one-time fee, or opt for our monthly hosting services for convenience! By partnering directly with text-messaging gateways, our users benefit from purchasing text messages at wholesale rates. As the premier turn-key SMS software solution, UltraSMSScript is ideal for advertising agencies, marketing providers, and businesses catering to local clients, offering a white-label option. Our platform supports an unlimited number of client accounts, especially with our Level 4 or ULTRA plans, all managed through a user-friendly administration panel that provides comprehensive control. Additionally, users can take advantage of various features such as Bulk SMS, Mobile Coupons, and 2-Way SMS Chat, enhancing their marketing strategies and client engagement. The versatility and scalability of UltraSMSScript make it a valuable tool for any organization looking to elevate its communication efforts.

Safeguard your conversations by ensuring that your VoIP calls are both encrypted and protected against eavesdropping. If maintaining privacy during your discussions is important to you, our free encryption services cover all forms of communication—text, voice, and video—leveraging TLS/SRTP and ZRTP protocols. Our VoIP softphone effortlessly merges with your contacts, allowing for easy access to a unified list pulled from various platforms like Outlook, Windows, Mac, LDAP, XMPP, XCAP, as well as mobile devices such as Android and iOS. Additionally, you can quickly recognize incoming calls prior to answering, which enhances your overall communication experience. Zoiper is designed to work across a broad spectrum of operating systems, including macOS, Linux, and Windows, while also being compatible with iOS, Android, and web browsers. We are dedicated to ongoing enhancements of our services and expanding our compatibility options. Forget about the complicated terminology; our solution integrates Audio, Video, Fax, Presence, and Instant Messaging, all through a streamlined interface that prioritizes user-friendliness. With Zoiper, you can communicate with confidence and effectiveness across numerous platforms, making your interactions more secure and enjoyable. Our commitment to user satisfaction drives us to keep evolving and adapting to your needs.

Vodia is a PBX solution that operates on both Windows and Linux platforms, delivering a comprehensive suite of advanced functionalities typically associated with robust PBX systems, such as call queues, auto attendants, and call forwarding capabilities. Additionally, Vodia stands out as a leader in Multi-Tenancy, allowing users to deploy it on a dedicated virtual machine in the cloud or on-site while managing numerous fully qualified domain names for different clients. You can experience Vodia by signing up for a free demo license, valid for 60 days, to explore its features firsthand. This trial is an excellent opportunity to see how Vodia can cater to your specific telecommunication needs.

Linphone is a versatile software solution designed for voice over IP (VoIP) communications, and you may want to explore the various software offerings we develop and distribute. If you're interested in integrating Linphone, the Liblinphone SDK, or the Flexisip server into your VoIP project, we invite you to read our white papers which detail common applications and implementations. If you're torn between using open-source or proprietary licenses, or if you need assistance with your project, we provide insights into our licensing options and the professional services available to support your needs. Delve into the background of Linphone, explore the expertise of our team, and review our notable references. Our SDK is crafted to simplify the development of VoIP clients across smartphones, tablets, desktop environments, as well as embedded systems, ensuring broad compatibility. You can easily integrate with mobile platform IDEs using our Maven repository and Cocoapods, and both SDK packages and source code are accessible for public sharing, fostering community collaboration. In addition, we encourage feedback and inquiries from users to continually improve our offerings.