Best PBX Software with a Free Trial of 2025

A versatile platform and applications tailored for MSPs and UCaaS Providers. Elevate your business with contemporary communication and phone systems, enhancing customer experience without significant upfront expenses. Chosen by a multitude of global customers, UCaaS providers, and resellers, Thirdlane is the preferred solution for those seeking a competitive advantage. Whether for businesses of any scale, government agencies, or call centers, Thirdlane's reliable and user-friendly multichannel communication solutions boost productivity, customer engagement, sales, and cost efficiency. Discover how Thirdlane can bolster your organization; request a quote today. In addition to the telephony features of the Thirdlane Multi Tenant PBX or Thirdlane Business Phone System, customers gain entry to the Thirdlane Connect application (desktop&mobile), covering chat, voice and video calls, conferencing, screen sharing, along with integration capabilities with CRM and diverse applications.

Yeastar P-Series PBX Systems is more than a PBX. It is a converged system designed for SMEs with higher expectations in business communications. The P-Series is a "PBX-Plus-More” solution that unifies voice, video, applications and collaboration. This allows SMEs to achieve more productivity, fill the UC gap and complete more complex tasks.

HoduPBX is the best solution for business communication. HoduPBX's unique user interface and optimal user experience allow businesses to communicate efficiently with their end users. This software provides unparalleled connectivity in an office environment and remote locations, making communication seamless. HoduPBX empowers agents' work management with multitasking capabilities and efficiency. Our IP PBX software is a great choice for business communications. It supports 1000+ concurrent calls and has 10,000 extensions. HoduPBX IP PBX Software offers various sophisticated features such as Add-on Modules, Reseller Module, SIP Trunking, Queue Pro, Voice Transcription, and Webphone. It also offers white label features across IOS, Android, Chrome Extension, Windows, Mac, Linux, and ZohoPhonebridge Plugin.

Virtual IP PBX (Private Branch Exchange), or Phone System Appliance – CompletePBX is the heart and soul of Xorcom's hardware and software telephone systems. It's built on top of Asterisk and Linux platforms and is designed for stability and high performance. CompletePBX was built from the ground up to offer ease-of-use, advanced features, and security at all levels. Get a fully functional, free CompletePBX 5 virtual machine evaluation now! CompletePBX certification training is available online for free. It will guide you through the basics of the system. You can save a lot of time and effort if you do it yourself. We can help you get there quicker.

Vodia is a software-based PBX that runs on Windows and Linux. It offers all the advanced features you would expect from a full-featured PBX, including call queues, auto attendants and call forwarding. Vodia is also the pioneer in Multi-Tenancy. You can host Vodia on a dedicated VM( Virtual Machine) in the cloud, premises, and maintain multiple FQDNs for each customer. Sign up for a hosted demo license code for 60 days.

Dial-Office is an adaptable and comprehensive IP PBX software crafted specifically for small and medium-sized businesses as well as start-ups eager to leverage the advantages of VoIP technology. Utilizing the SIP standard framework, this IP PBX software offers a variety of sophisticated phone functionalities that were once limited to expensive, traditional circuit-switched enterprise telephone systems. The Dial-Office IP PBX software ensures dependable and affordable unified communications for small to mid-sized enterprises over a well-established Local Area Network. This award-winning VoIP solution guarantees users exceptional voice clarity and a range of business management tools aimed at boosting productivity, reducing communication expenses, and improving customer service. In addition to these benefits, the platform boasts features that cater to the specific needs of modern businesses, making it a versatile choice for enhancing communication efficiency.

Yeastar K2 IPPBX is available as both hardware and software. It supports 2000 users, 500 concurrent conversations, and 400 VoIP trunks across multiple locations. This gives medium and large enterprises full flexibility and capability. Yeastar K2IP PBX is designed to meet the communication needs of today and tomorrow. It offers enterprise-level features and exceptional reliability. It also allows remote working with next-level Linkus UC Softphone.

The VaxVoIP SIP Server SDK is a powerful development toolkit that enables building secure, scalable SIP-based VoIP solutions including IP-PBX, IVR systems, auto-dialers, smart agents, call centers, and calling card systems. Compatible with the SIP protocol, it supports various SIP devices such as softphones, hardphones, and ATA adapters, providing flexibility in hardware integration. The SDK offers a rich set of PBX functionalities like call queues, call forwarding, call recording, voicemail, and sophisticated call routing to create feature-rich telephony applications. Security is a priority, with protections against SIP floods, scanning attacks, and brute-force intrusions to safeguard communications. Developers can access audio PCM data in real time, facilitating the incorporation of AI, machine learning, and smart agents to deliver intelligent, automated interaction. This integration enables next-generation voice communication solutions with enhanced responsiveness and adaptability. VaxVoIP simplifies complex VoIP development challenges, offering a reliable, secure foundation. It’s an ideal choice for developers aiming to build modern, secure, and intelligent SIP-based communication systems.