FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a versatile software implementation that runs on any commodity hardware. From a Raspberry PI to a multi-core server, FreeSWITCH can unlock the telecommunications potential of any device.
OpenSIPS is a GPL implementation of a multi-functionality SIP Server that targets to deliver a high-level technical solution (performance, security and quality) to be used in professional SIP server platforms.
| Metric | freeswitch | opensips |
|---|---|---|
| Stars | 4,887 | 1,457 |
| Forks | 1,768 | 645 |
| Open Issues | 1,165 | 290 |
| Language | C | C |
| License | NOASSERTION | NOASSERTION |
| Last commit | 2mo ago | 3mo ago |
| Repo age | 7.7y | 13.2y |
| Activity score | 73/100 | 68/100 |
freeswitch has 3.4× more stars (4,887 vs 1,457).
Both are actively maintained (last commit 60d ago vs 77d ago).
opensips is more established (13.2y vs 7.7y old).
Both are primarily written in C.
