Quick Overview
- 1#1: VICIdial - Open-source contact center suite with predictive dialing, inbound/outbound campaigns, and real-time agent monitoring.
- 2#2: 3CX - Free PBX for up to 10 users featuring call queues, IVR, ACD, and mobile apps for small call centers.
- 3#3: FreePBX - Web-based GUI for Asterisk providing advanced call queues, reporting, and CRM integrations for call centers.
- 4#4: VitalPBX - Community edition PBX with call center modules including queues, wallboards, and predictive dialing.
- 5#5: Issabel - Free unified communications platform with call center pro module for queue management and agent tools.
- 6#6: GoAutoDial - Free open-source predictive dialer and blended call center system built on Asterisk and VICIdial.
- 7#7: FusionPBX - Multi-tenant FreeSWITCH GUI supporting call centers with queues, conferencing, and high availability.
- 8#8: Wazo - Modular open-source UC platform offering call center features like agent dashboards and statistics.
- 9#9: Asterisk - Core open-source PBX framework for building scalable call center systems with queues and IVR.
- 10#10: FreeSWITCH - Robust open-source telephony platform for developing high-performance call center applications.
We prioritized tools based on feature depth, reliability, ease of use, and value, ensuring a balanced list that caters to everything from small teams to scalable call center operations.
Comparison Table
Discover a straightforward comparison of top free call center software tools, featuring VICIdial, 3CX, FreePBX, VitalPBX, Issabel, and more. This table outlines key features, use cases, and practical fit to help readers identify the best solution for their operational needs, from call routing to agent management.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | VICIdial Open-source contact center suite with predictive dialing, inbound/outbound campaigns, and real-time agent monitoring. | enterprise | 9.2/10 | 9.5/10 | 6.8/10 | 10/10 |
| 2 | 3CX Free PBX for up to 10 users featuring call queues, IVR, ACD, and mobile apps for small call centers. | enterprise | 8.4/10 | 9.1/10 | 7.6/10 | 9.5/10 |
| 3 | FreePBX Web-based GUI for Asterisk providing advanced call queues, reporting, and CRM integrations for call centers. | enterprise | 7.8/10 | 7.5/10 | 6.8/10 | 9.5/10 |
| 4 | VitalPBX Community edition PBX with call center modules including queues, wallboards, and predictive dialing. | enterprise | 8.2/10 | 8.5/10 | 8.0/10 | 9.5/10 |
| 5 | Issabel Free unified communications platform with call center pro module for queue management and agent tools. | enterprise | 8.2/10 | 8.5/10 | 7.5/10 | 9.8/10 |
| 6 | GoAutoDial Free open-source predictive dialer and blended call center system built on Asterisk and VICIdial. | enterprise | 7.2/10 | 8.4/10 | 5.1/10 | 9.3/10 |
| 7 | FusionPBX Multi-tenant FreeSWITCH GUI supporting call centers with queues, conferencing, and high availability. | enterprise | 7.2/10 | 8.0/10 | 5.5/10 | 9.5/10 |
| 8 | Wazo Modular open-source UC platform offering call center features like agent dashboards and statistics. | enterprise | 8.1/10 | 8.4/10 | 7.2/10 | 9.6/10 |
| 9 | Asterisk Core open-source PBX framework for building scalable call center systems with queues and IVR. | enterprise | 8.7/10 | 9.5/10 | 6.0/10 | 10/10 |
| 10 | FreeSWITCH Robust open-source telephony platform for developing high-performance call center applications. | enterprise | 7.8/10 | 8.5/10 | 6.0/10 | 9.8/10 |
Open-source contact center suite with predictive dialing, inbound/outbound campaigns, and real-time agent monitoring.
Free PBX for up to 10 users featuring call queues, IVR, ACD, and mobile apps for small call centers.
Web-based GUI for Asterisk providing advanced call queues, reporting, and CRM integrations for call centers.
Community edition PBX with call center modules including queues, wallboards, and predictive dialing.
Free unified communications platform with call center pro module for queue management and agent tools.
Free open-source predictive dialer and blended call center system built on Asterisk and VICIdial.
Multi-tenant FreeSWITCH GUI supporting call centers with queues, conferencing, and high availability.
Modular open-source UC platform offering call center features like agent dashboards and statistics.
Core open-source PBX framework for building scalable call center systems with queues and IVR.
Robust open-source telephony platform for developing high-performance call center applications.
VICIdial
enterpriseOpen-source contact center suite with predictive dialing, inbound/outbound campaigns, and real-time agent monitoring.
Sophisticated predictive dialer with real-time abandon rate optimization and carrier log blending for maximum efficiency.
VICIdial is a free, open-source call center suite built on Asterisk PBX, offering comprehensive inbound, outbound, and blended calling capabilities. It supports advanced dialing modes including predictive, power, progressive, and preview dialing, along with agent scripting, CRM integration, real-time reporting, and IVR systems. Ideal for high-volume operations, it enables multi-tenant setups for managing multiple campaigns and agents efficiently.
Pros
- Completely free and open-source with no licensing fees
- Highly scalable for small to enterprise-level call centers
- Extensive customization and integrations with CRMs and telephony systems
Cons
- Steep learning curve requiring Linux and Asterisk knowledge for setup
- Dated web interface that feels clunky compared to modern SaaS tools
- Ongoing maintenance and server management demands technical expertise
Best For
Technical teams at small to large call centers needing a powerful, cost-free solution for high-volume inbound and outbound campaigns.
Pricing
100% free open-source software; optional paid hosting, support, and add-ons available from partners.
3CX
enterpriseFree PBX for up to 10 users featuring call queues, IVR, ACD, and mobile apps for small call centers.
Integrated call center wallboard for real-time queue monitoring and agent performance visualization
3CX is a software-based VoIP PBX platform offering a free edition tailored for small call centers, supporting unlimited extensions and up to 10 simultaneous calls with no time limits. It includes essential call center features like ACD queues, IVR menus, call recording, real-time reporting, and wallboards. The solution can be self-hosted on Windows, Linux, or Raspberry Pi, providing flexibility without vendor lock-in. Advanced CRM integrations and mobile apps enhance its utility for basic contact center operations.
Pros
- Completely free perpetual license for up to 10 simultaneous calls with unlimited extensions
- Rich call center toolkit including queues, skills-based routing, recording, and customizable reports
- Self-hosted deployment options with easy ISO installation and broad hardware compatibility
Cons
- Scalability limited to 10 simultaneous calls in free version, requiring paid upgrades for growth
- Self-hosting demands technical knowledge for maintenance, updates, and security
- Community support only for free edition; past vulnerabilities have raised security concerns
Best For
Small businesses or startups with low-volume call centers needing a robust, no-cost PBX with professional features.
Pricing
Free edition for up to 10 simultaneous calls; paid perpetual licenses start at ~$145 per additional 8-25 SC, or annual hosted plans from $110/year.
FreePBX
enterpriseWeb-based GUI for Asterisk providing advanced call queues, reporting, and CRM integrations for call centers.
Advanced free Queue module supporting ring strategies, penalties, dynamic agents, and failover for reliable call distribution
FreePBX is a free, open-source web-based graphical user interface for the Asterisk PBX platform, enabling the creation of private branch exchange systems with call center capabilities like queues and agent management. It supports essential features such as call routing, IVR menus, music-on-hold, and basic reporting through its core modules, making it suitable for small-scale call centers. While highly extensible via community modules, advanced call center tools often require paid add-ons.
Pros
- Completely free and open-source core with no licensing costs
- Robust queue management with multiple strategies and agent login/logout
- Highly customizable through a vast module ecosystem
Cons
- Steep learning curve for installation and advanced configuration on Linux
- Limited built-in agent dashboards and analytics in free version
- Requires self-hosting on dedicated hardware or VPS, adding maintenance overhead
Best For
Small to medium-sized businesses or tech-savvy teams needing a customizable, no-cost PBX foundation for basic call queuing and routing.
Pricing
Core software is 100% free and open-source; optional commercial modules and hosted Distro plans start at $15/month per server.
VitalPBX
enterpriseCommunity edition PBX with call center modules including queues, wallboards, and predictive dialing.
Built-in real-time wallboard for live agent and queue monitoring
VitalPBX is an open-source, web-based IP PBX system built on Asterisk, offering comprehensive call center features in its free Community Edition, including agent management, call queues, IVR, conferences, and real-time reporting. It supports inbound/outbound campaigns with wallboards for monitoring agent performance and call metrics. Designed for scalability, it runs efficiently on virtual machines or dedicated hardware, making it suitable for small to medium call centers seeking a no-cost telephony solution.
Pros
- Free Community Edition with core call center tools like queues and agent login
- Modern, intuitive web GUI for easy configuration and monitoring
- Modular architecture allows extensibility without high costs
Cons
- Advanced features like predictive dialing require paid modules
- Initial setup may need Linux/Asterisk knowledge
- Limited official support in free version relies on community forums
Best For
Small to medium call centers looking for a robust, free open-source PBX with essential call queuing and reporting capabilities.
Pricing
Free Community Edition; commercial Standard/Enterprise editions start at $350/year for 50 extensions with premium support and modules.
Issabel
enterpriseFree unified communications platform with call center pro module for queue management and agent tools.
Integrated Call Center Pro module offering real-time agent status, queue performance metrics, and wallboard displays
Issabel is an open-source PBX platform forked from FreePBX, built on Asterisk, providing a web-based interface for managing unified communications. It supports call center operations with features like ACD queues, IVR, call recording, agent monitoring, and detailed reporting. As a free solution, it's suitable for small to medium businesses deploying telephony without licensing costs.
Pros
- Completely free and open-source with no licensing fees
- Comprehensive call center tools including queues, recording, and real-time dashboards
- Modular design allows easy customization and integration
Cons
- Setup and maintenance require Linux server knowledge
- Relies on community support rather than official enterprise assistance
- Documentation can be inconsistent and steeper learning curve for beginners
Best For
Small to medium-sized businesses or startups seeking a cost-free, feature-rich PBX for basic to moderate call center needs.
Pricing
100% free open-source software; optional donations and paid hosting/partners available.
GoAutoDial
enterpriseFree open-source predictive dialer and blended call center system built on Asterisk and VICIdial.
Vicibox one-click ISO installer for rapid deployment of full Vicidial/Asterisk stack
GoAutoDial is an open-source call center software suite built on Vicidial and Asterisk, offering predictive dialing, inbound/outbound campaigns, IVR, CRM integration, and real-time reporting for contact centers. It supports multi-tenant setups and can be deployed on a single server or clustered environment using the Vicibox ISO for simplified installation. As a free solution, it provides enterprise-grade features without licensing costs, making it suitable for cost-conscious operations.
Pros
- Completely free open-source with no user licensing fees
- Rich feature set including predictive dialing, CRM, and advanced reporting
- Scalable from single-server to enterprise clusters
Cons
- Steep learning curve and complex self-hosted installation
- Outdated user interface requiring technical expertise
- Limited official support in the community edition
Best For
Small to medium call centers or startups seeking a powerful, no-cost auto-dialer solution with technical resources for setup and maintenance.
Pricing
Free open-source community edition; optional paid enterprise support starting at custom quotes.
FusionPBX
enterpriseMulti-tenant FreeSWITCH GUI supporting call centers with queues, conferencing, and high availability.
Multi-tenant support for hosting multiple independent PBX instances from a single server.
FusionPBX is an open-source, multi-tenant graphical user interface for FreeSWITCH, enabling the setup and management of advanced PBX systems. It offers call center essentials like inbound/outbound queues, IVR menus, call routing, recording, and real-time dashboards. While powerful and scalable, it requires technical expertise for deployment and customization.
Pros
- Completely free and open-source with no licensing costs
- Highly scalable multi-tenant architecture
- Robust call center tools including queues, IVR, and CDR reporting
Cons
- Steep learning curve and complex initial setup
- Requires Linux server administration skills
- UI feels dated and documentation is inconsistent
Best For
Technical teams at small to medium call centers needing a customizable, cost-free telephony platform.
Pricing
Free (open-source; optional paid support available).
Wazo
enterpriseModular open-source UC platform offering call center features like agent dashboards and statistics.
Advanced real-time dashboards and wallboards for call center supervisors with customizable statistics and visualizations
Wazo (wazo.io) is a fully open-source unified communications platform powered by Asterisk, offering a robust call center solution with features like agent management, call queues, IVR, call recording, and real-time statistics. It provides a web-based interface for supervisors and agents, enabling efficient handling of inbound and outbound calls in contact centers. Designed for self-hosting, Wazo emphasizes modularity and customization for scalable deployments without licensing costs.
Pros
- Completely free and open-source with no hidden fees
- Comprehensive call center tools including queues, skills-based routing, and reporting
- Modular architecture for easy customization and integration
Cons
- Complex initial setup requiring Linux and VoIP expertise
- Documentation is functional but could be more comprehensive
- Smaller community compared to larger platforms, limiting quick support
Best For
Small to medium-sized businesses or teams needing a highly customizable, self-hosted call center solution without vendor lock-in.
Pricing
100% free open-source software; optional paid professional services and support available.
Asterisk
enterpriseCore open-source PBX framework for building scalable call center systems with queues and IVR.
Asterisk Gateway Interface (AGI) for scripting complex, custom call logic in any language
Asterisk is a free, open-source software framework used to build powerful telephony systems, including full-featured PBX and call center solutions. It supports SIP, IAX2, PRI, and other protocols, enabling advanced call routing, interactive voice response (IVR), agent queues, call recording, and real-time monitoring. Widely deployed in production call centers, it offers unparalleled flexibility for custom integrations via dialplan scripting and AGI.
Pros
- Extremely flexible and extensible for custom call center workflows
- Large ecosystem with modules for queues, reporting, and CRM integrations
- Battle-tested scalability for high-volume call centers
Cons
- Steep learning curve requiring Linux and dialplan expertise
- No built-in GUI; relies on third-party tools like FreePBX for management
- Configuration can be error-prone without proper documentation
Best For
Technical teams or developers seeking a highly customizable, no-cost foundation for enterprise-grade call centers.
Pricing
Completely free open-source software; optional commercial support and modules available from partners.
FreeSWITCH
enterpriseRobust open-source telephony platform for developing high-performance call center applications.
Carrier-grade scalability supporting unlimited simultaneous channels with low-latency media handling
FreeSWITCH is a powerful open-source telephony platform designed for real-time communication applications, including scalable call center deployments with features like IVR, ACD routing, call queuing, and conferencing. It handles SIP, WebRTC, and other protocols, enabling high-volume call processing and integration with external CRM or recording systems via Lua scripting and modules. While highly flexible, it requires significant configuration to function as a full call center solution.
Pros
- Highly scalable for thousands of concurrent calls
- Modular architecture with extensive integrations
- Completely free and open-source with strong community support
Cons
- Steep learning curve and XML-based configuration
- No built-in graphical user interface
- Requires custom development for advanced call center workflows
Best For
Technical teams and developers building custom, high-volume call center systems on a budget.
Pricing
Free (open-source under Mozilla Public License 1.1).
Conclusion
The review highlights a diverse set of free call center tools, with VICIdial emerging as the top choice, admired for its robust contact center suite and predictive dialing. Strong alternatives like 3CX, ideal for small teams, and FreePBX, excelling in advanced customization, ensure users find solutions tailored to their specific needs. Together, these tools demonstrate that effective call center software doesn’t require a large budget.
Don’t miss out—explore VICIdial today to unlock its powerful features and enhance your contact center’s performance.
Tools Reviewed
All tools were independently evaluated for this comparison