CloudTalk

Best Self Hosted Alternatives to CloudTalk

A curated collection of the 3 best self hosted alternatives to CloudTalk.

CloudTalk is a cloud-hosted VoIP call center and business phone system for sales and support teams, offering virtual numbers, IVR, call routing, call recording, analytics, and integrations with CRM and helpdesk platforms.

Alternatives List

#1
Asterisk

Asterisk

Open-source PBX and telephony toolkit for building communications applications; modular C-based engine with SIP, WebRTC, RTP, ARI/AMI APIs and hardware support.

Asterisk screenshot

Asterisk is an open-source telephony engine and PBX toolkit implemented primarily in C and developed for GNU/Linux. It exposes traditional PBX features and low-level telephony primitives so developers and operators can build SIP, WebRTC and PSTN-connected communications applications.

Key Features

  • Modular, channel-based architecture with pluggable modules for SIP (chan_pjsip / chan_sip), media, codecs and hardware interfaces
  • WebRTC support (WSS/DTLS-SRTP), RTP/RTCP handling, and modern codec support including Opus for browser and realtime audio
  • ARI (Asterisk REST Interface) exposing REST + WebSocket events for building custom programmable call applications
  • AMI and AGI interfaces for management, automation and traditional dialplan scripting; full CLI and menuselect build configuration
  • PSTN and telephony hardware integration (traditional telephony cards and drivers) alongside VoIP gateway capability
  • Source-driven build system using autoconf/Autotools and GNU Make; extensive documentation, community forum and release advisories

Use Cases

  • Deploying an enterprise or branch PBX providing calls, voicemail, conferencing, queues and call routing
  • Acting as a VoIP gateway or SBC to bridge SIP/WebRTC clients with PSTN trunks and telephony hardware
  • Building programmable communications services (IVR, voicebots, conferencing, call recording) using ARI or AMI

Limitations and Considerations

  • Nontrivial operational complexity: requires careful configuration, dependency management and familiarity with telephony concepts
  • Requires proactive security and performance tuning (file-descriptor limits, TLS/DTLS configuration); security advisories are periodically published for critical fixes
  • Feature surface is large and modularity means some functionality requires enabling/building specific modules or external libraries

Asterisk is a mature, widely adopted telephony engine suited for operators and developers who need deep control over call handling and media. It is maintained by a large community and is intended for production PBX and programmable-telephony deployments.

3kstars
1.2kforks
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#2
FusionPBX

FusionPBX

FusionPBX is a domain-based, multi-tenant PBX and softswitch web UI for FreeSWITCH, supporting extensions, IVR, queues, voicemail, provisioning, and more.

FusionPBX screenshot

FusionPBX is a full-featured, domain-based multi-tenant PBX and voice switch built around FreeSWITCH. It provides a web-based interface to manage telephony features for businesses, service providers, and multi-customer environments.

Key Features

  • Domain-based multi-tenancy for hosting multiple independent PBX tenants
  • Extension and user management with typical PBX calling features
  • IVR, ring groups, call parking, and call routing via dialplan tools
  • Call queues / ACD and call center-oriented applications
  • Voicemail features including voicemail-to-email support
  • Device provisioning with troubleshooting logs for provisioning requests
  • Call detail records (CDR) and call recordings management
  • High availability and redundancy options for more resilient deployments

Use Cases

  • Hosting a multi-tenant PBX platform for customers or departments
  • Building a VoIP business phone system with IVR, voicemail, and queues
  • Running a FreeSWITCH-based softswitch with web-managed configuration

Limitations and Considerations

  • Requires deploying and operating FreeSWITCH alongside the FusionPBX web application
  • Some advanced features (for example, certain reporting modules and the REST API) may depend on membership or add-on applications

FusionPBX is well-suited for organizations that want a FreeSWITCH-based telephony stack with a comprehensive administrative UI and multi-tenant capabilities. It scales from single-instance PBX deployments to carrier-oriented environments when designed with redundancy in mind.

963stars
731forks
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#3
Wazo Platform

Wazo Platform

Open-source, API-first platform for carrier-grade IP communications: VoIP, WebRTC, messaging, conferencing and programmable telephony microservices.

Wazo Platform screenshot

Wazo Platform is an open-source, API-first project for building carrier-grade IP communication infrastructures. It provides microservices, APIs and SDKs to deliver VoIP, WebRTC, messaging, conferencing, call center and PBX features for custom and scalable deployments. (wazo-platform.org)

Key Features

  • API-first microservices implemented primarily in Python, exposing REST APIs, WebSockets and Webhooks. (github.com)
  • Call-control and telephony services (wazo-calld) for creating and managing calls, voicemail, transfers and switchboards. (github.com)
  • WebRTC-enabled softphone SDKs and demos for embedding browser-based voice/video clients. (github.com)
  • Engine integration with telecom components (Asterisk, Kamailio, RTPEngine) and a technical stack using Nginx, RabbitMQ and PostgreSQL. (wazo-platform.org)
  • Container and packaging support (Docker / docker-compose) and OpenAPI-described endpoints for easier integration. (github.com)

Use Cases

  • Build a white-label UCaaS or MSP offering with programmable VoIP, chat and conferencing.
  • Integrate an embedded softphone or add telephony features into web and mobile apps.
  • Deploy SIP routing, session border controller or contact center/call-center services.

Limitations and Considerations

  • Wazo relies on third-party telecom components (Asterisk, Kamailio, RTPEngine); deploying and operating production telecom stacks requires telephony and infrastructure expertise. (wazo-platform.org)
  • The community maintains most components and some container tooling is marked experimental; CI/packaging and deployment workflows may need adaptation for production. (github.com)

Wazo Platform provides a modular, extensible foundation for building programmable telephony and UC solutions. It targets operators, MSPs and developers who need deep customization and API-level control over telecommunication features. (wazo-platform.org)

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Why choose an open source alternative?

  • •Data ownership: Keep your data on your own servers
  • •No vendor lock-in: Freedom to switch or modify at any time
  • •Cost savings: Reduce or eliminate subscription fees
  • •Transparency: Audit the code and know exactly what's running