Compare software

Flexisip vs Routr: catalog facts
Flexisip	Routr
Best for: Running your own SIP VoIP service, especially for Linphone mobile users	Best for: Integrators building a containerised SIP infrastructure
Free Free under the AGPL 3.0, with a paid proprietary licence for closed-source use.	Free Free and open source under the MIT licence.
Self-hosted	Self-hosted, Command line
Push gateway delivers calls and messages to mobile apps in the background Proxy, presence and B2BUA in one suite All 4 strengths for Flexisip Push gateway delivers calls and messages to mobile apps in the background Proxy, presence and B2BUA in one suite Powers the public linphone.org SIP service Can run on embedded hardware	Ready for Docker and Kubernetes deployments Managed via CLI, REST API or web interface All 3 strengths for Routr Ready for Docker and Kubernetes deployments Managed via CLI, REST API or web interface Custom processors and middleware for routing logic
Requires SIP and VoIP knowledge to deploy Conference server is now a separate package	Aimed at carriers and integrators rather than home users Requires SIP knowledge to configure
Self-hosted	Self-hosted
Open source	Open source
License: AGPL-3.0	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Sources for Flexisip linphone.org/en/flexisip-sip-server github.com/BelledonneCommunications/flexisip Catalog checked October 2, 2026	Official website Full listing and sources Sources for Routr routr.io github.com/fonoster/routr Catalog checked October 2, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.