Greenlight vs Janus
A side-by-side comparison of two self-hosted video conferencing options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Greenlight
Front-end for managing BigBlueButton meeting rooms
VS
Janus
General-purpose, lightweight, minimalist WebRTC Server
| Feature | Greenlight | Janus |
|---|---|---|
| Category | Video Conferencing | Video Conferencing |
| License | LGPL-3.0 | GPL-3.0 |
| Language | Ruby | C |
| Setup difficulty | Medium | Medium |
| Min. RAM | 1,024 MB | 512 MB |
| Deployment | docker, source | bare-metal |
| GitHub stars | ★ 848 | ★ 9,144 |
| First released | 2016 | 2020 |
| Replaces | Zoom, Google Meet | — |
Why pick each one
Choose Greenlight if…
- Released under the LGPL-3.0 license
- First-class Docker support for quick deployment
- Written in Ruby
Choose Janus if…
- Released under the GPL-3.0 license
- Mature project with 9.1k GitHub stars
- Written in C
- Lightweight — runs in 512 MB RAM
Frequently asked questions
Is Greenlight or Janus better?
Neither is universally better. Janus has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.
Are Greenlight and Janus free and open-source?
Yes. Greenlight is licensed under LGPL-3.0 and Janus under GPL-3.0. Both can be self-hosted at no software cost.
Can I run Greenlight and Janus with Docker?
Greenlight: yes. Janus: check the project docs for container support.