No. 2 of 34 ·Mass Notification Software

Open Paging Server

Web · Linux · Self-hosted

Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely2 of 6 device platforms
DocumentedPlans, terms and facts published

Open Paging Server is ranked #2 of 34 in mass notification software on Freedom251. It runs on Linux, Self-hosted, Web. There is a free plan.

Open Paging Server plans and pricing

All plans

Open Paging Server Free Free for private, public, or commercial use Self-hosted · Currently in beta and not ready for production use docs.openpagingserver.org · 4 Oct 2026

Compared on mass notification software

Free plan: Yes

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The record

Purpose: Open Paging Server is a public address and mass notification system that runs on existing VoIP infrastructure.
Features: It supports live paging, mass messaging, and bells.
VoIP connectivity: It supports SIP connections to VoIP PBX or ITSP systems and multicast broadcasts to IP phones or speakers.
Endpoint ecosystem: The project maintains first-party modules for multiple major endpoint brands and supports third-party modules through its SDK.
Example endpoints: The project lists Cisco, Polycom, Yealink, and Snom among its official endpoint modules.
PBX compatibility: The compatibility matrix lists Cisco Unified Communications Manager versions 11, 12, 14, and 15 as working as intended.
Other tested servers: The compatibility matrix lists Asterisk 18 through 23 and FreePBX 15 through 17 using chan_pjsip as working as intended.
Deployment: The maker provides an automatic Linux installer and Docker Compose installation instructions.
Linux requirements: The automatic installer supports Debian 12 or later and Ubuntu 23.10 or later on x64 or ARM64.
License and hosting: The software is licensed under GPL 2.0 and can be self-hosted, allowing users to retain control of their data.
Beta status: The maker says the software is currently in beta and not ready for production use.
Support: The project is community-driven and points users to Discord and GitHub for community involvement and support.
Intended users: The maker describes it as designed for small to medium enterprises familiar with system administration and seeking cost savings.
Price from: Free

Where it ranks on Freedom251

Best Mass Notification Software in 2026#2 of 34

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Sources

openpagingserver.org· checked 4 Oct 2026
github.com/OpenPagingServer/OpenPagingServer· checked 4 Oct 2026
docs.openpagingserver.org/admin/endpoints/siptrunks/compatibility· checked 4 Oct 2026
install.openpagingserver.org· checked 4 Oct 2026
docs.openpagingserver.org/introduction/commercial/· checked 4 Oct 2026