Flexisip vs Papercups
A side-by-side comparison of two self-hosted chat & communication options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Flexisip
Complete, modular and scalable SIP server, includes a push gateway, to
VS
Papercups
Open-source live chat and customer messaging
| Feature | Flexisip | Papercups |
|---|---|---|
| Category | Chat & Communication | Chat & Communication |
| License | AGPL-3.0 | MIT |
| Language | C++ | Elixir |
| Setup difficulty | Medium | Medium |
| Min. RAM | 512 MB | 1,024 MB |
| Deployment | docker | docker, bare-metal, source |
| GitHub stars | ★ 186 | ★ 6,097 |
| First released | 2020 | 2020 |
| Replaces | — | Intercom, Drift |
Why pick each one
Choose Flexisip if…
- Released under the AGPL-3.0 license
- First-class Docker support for quick deployment
- Written in C++
- Lightweight — runs in 512 MB RAM
Choose Papercups if…
- Released under the MIT license
- First-class Docker support for quick deployment
- Mature project with 6.1k GitHub stars
- Written in Elixir
Frequently asked questions
Is Flexisip or Papercups better?
Neither is universally better. Papercups has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Flexisip and Papercups free and open-source?
Yes. Flexisip is licensed under AGPL-3.0 and Papercups under MIT. Both can be self-hosted at no software cost.
Can I run Flexisip and Papercups with Docker?
Flexisip: yes. Papercups: yes.