Open-source alternatives to RingCentral

RingCentral in the Communication category. These are the open alternatives we recommend looking at.

Kamailio

SIP server for large VoIP and real-time communication platforms.

GPL-2.0Strong copyleft

SaaS: YesClosed product: No

GitHub stars
3k
Deployment
Server

Asterisk

Phone system and VoIP platform for calls, queues, voicemail and SIP trunks.

GPL-2.0Strong copyleft

SaaS: YesClosed product: No

GitHub stars
3.6k
Deployment
Server

This is guidance, not legal advice (inte juridisk rådgivning). Check with a lawyer before deciding.

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