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openSIPS

OPEN SRC

SIP proxy/server for voice, video, IM, presence and any other SIP extensions

VG SCORE
9.0
VIEW ALTERNATIVES

Product Details

PricingOpen Source
API✅ REST
Learning CurveSteep
Integrations9 available

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PROS & CONS

STRENGTHS

  • Highly flexible and programmable for custom routing and logic.
  • Extremely scalable and performant, suitable for carrier-grade deployments.
  • Completely free and open-source with a strong, active community.

WEAKNESSES

  • −Lacks a built-in graphical management interface; configuration is primarily file-based.
  • −Steep learning curve; requires significant SIP protocol and C scripting expertise.

KEY FEATURES

High-Performance Proxy

Handles massive volumes of SIP traffic with low latency.

Real-time Database Integration

Connects to SQL/NoSQL backends for dynamic subscriber management.

Load Balancing & Failover

Distributes traffic across servers and ensures service continuity.

Extensible via Modules

Modular architecture for adding features like authentication, billing, and more.

WHO IS openSIPS BEST FOR?

Enterprises and system integrators

They deploy it as a core component for unified communications, enabling features like presence, instant messaging, and custom SIP-based applications.

Telecom service providers and carriers

Best for building scalable, carrier-grade VoIP and real-time communication platforms due to its high-performance SIP routing and load balancing.

INTEGRATIONS

FreeSWITCHRTPengineMySQLHTTP serversRedisRESTful applicationsKamailioAsteriskPostgreSQL

TECHNICAL DETAILS

LEARNING CURVE
STEEP — SIGNIFICANT ONBOARDING
API

✓ REST

FIELD REPORTS (0)

No field reports yet. Be the first to review openSIPS.

DOSSIER

LAST VERIFIED MAR 23, 2026
VISIT WEBSITE

FILED UNDER

Developer ToolsOpen Source

ALTERNATIVES

Wazo9.0/10Yeti-Switch9.0/10
ALL ALTERNATIVES

INTEGRATIONS

FreeSWITCHRTPengineMySQLHTTP serversRedisRESTful applicationsKamailioAsteriskPostgreSQL

PRICING MODEL

open source

BEST FOR

Enterprises and system integrators Telecom service providers and carriers

FEATURES

Has API

FINAL ASSESSMENT

APPROVED — WORTH YOUR MONEY

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