Skip to content
Repoly

Open source alternatives to Twilio

We track 6 open-source Twilio alternatives, of which 4 currently score 70 or above on Repoly's GitHub health scale and 1 ship a Docker image. FreeSWITCH leads on health at 85/100 with 70 commits in the last 90 days; across all 6 projects you are choosing between GPL-2.0, MIT, MPL-2.0.

6
Alternatives
15k
Combined stars
770
Commits / 90 days
1
With Docker
Licence family Licence

Showing 6 of 6 tools

All 6 Twilio alternatives, ranked by health

  • Top pick · highest health

    FreeSWITCH

    85 GOOD

    Scalable open source cross-platform telephony platform.

    ★ 5.1k · ⟳ today · v1.11.3 · MPL-2.0

    C
    Website ↗ Source ↗

  • Asterisk

    84 GOOD

    Easy to use but advanced IP PBX system, VoIP gateway and conference server.

    ★ 3.5k · ⟳ 3 days ago · 23.5.0 · GPL-2.0

    Cdeb
    Website ↗ Source ↗

  • Routr

    80 GOOD

    Lightweight SIP proxy, location server, and registrar for a reliable and scalable SIP infrastructure.

    ★ 1.7k · ⟳ 6 days ago · v2.15.1 · MIT

    DockerK8S
    Website ↗ Source ↗

  • openSIPS

    58 SLOWING

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

    ★ 1.5k · ⟳ 3 days ago · GPL-2.0

    C
    Website ↗ Source ↗

Twilio alternatives: common questions

What is the most maintained open source alternative to Twilio?

FreeSWITCH scores highest at 85/100, with 70 commits in the last 90 days, 5.1k GitHub stars and its latest release (v1.11.3) published 17 days ago. openSIPS has the most raw commit activity at 340 commits in 90 days.

Which Twilio alternatives use a permissive licence?

2 of 6 are permissively licensed (MIT, Apache, BSD or similar): FreeSWITCH (MPL-2.0), Routr (MIT). 4 use copyleft licences such as GPL or AGPL, which require you to publish changes if you distribute a modified version.

Which Twilio alternatives run in Docker?

1 of 6 publish a Docker image or Compose file: Routr. Docker support contributes 10 of the 100 available health points, because it is the clearest signal that self-hosting is a supported path rather than an afterthought.