Headscale vs Nebula
A side-by-side comparison of two self-hosted remote access & vpn options — licensing, setup difficulty, resource needs, and what each one replaces.
Headscale
Open-source self-hosted Tailscale control server
VS
Nebula
Scalable overlay networking tool from Slack
| Feature | Headscale | Nebula |
|---|---|---|
| Deploy effort | Under-an-hour setup | Read-the-docs project |
| Health score | 99 · Excellent | 95 · Excellent |
| Category | Remote Access & VPN | Remote Access & VPN |
| License | BSD-3-Clause | MIT |
| Language | Go | Go |
| Setup difficulty | Medium | Hard |
| Min. RAM | 128 MB | 64 MB |
| Deployment | docker, binary | binary, bare-metal |
| GitHub stars | ★ 44,077 | ★ 18,381 |
| First released | 2020 | 2019 |
| Replaces | Tailscale | Tailscale |
What are Headscale and Nebula?
Headscale
Headscale is an open-source, self-hosted implementation of the Tailscale control server. It lets you run your own coordination server while using official Tailscale clients.
- Self-hosted Tailscale coordination
- Works with official clients
- Single binary server
- ACL support
Nebula
Nebula is an open-source overlay networking tool built for scalability and security, originally created at Slack. It uses a certificate-based model to connect hosts across the internet.
- Certificate-based identity
- Scales to large fleets
- Built-in firewall rules
- Cross-platform binaries
Headscale vs Nebula: key differences
Both projects are written in Go. Licensing differs — BSD-3-Clause for Headscale versus MIT for Nebula. Nebula is the lighter option, starting around 64 MB of RAM against 128 MB for Headscale. Headscale has the considerably larger community, at 44,077 GitHub stars versus 18,381. Headscale lists first-class Docker deployment; Nebula does not.
Why pick each one
Choose Headscale if…
- Full control of coordination
- Lightweight
Watch out for
- No official GUI
Choose Nebula if…
- Proven at Slack scale
- Lightweight and fast
- Fine-grained host firewalling
Watch out for
- Manual certificate management
- No management GUI
Frequently asked questions
Is Headscale or Nebula better?
Headscale is the stronger all-round pick: it has both the larger community and the simpler medium setup. Consider Nebula if its specific feature set fits your needs better.
Are Headscale and Nebula free and open-source?
Yes. Headscale is licensed under BSD-3-Clause and Nebula under MIT. Both can be self-hosted at no software cost.
Can I run Headscale and Nebula with Docker?
Headscale: yes. Nebula: check the project docs for container support.
Which is lighter on resources, Headscale or Nebula?
Nebula has the smaller minimum footprint at 64 MB of RAM, compared to about 128 MB for Headscale. Real-world usage depends on library size, user count, and enabled features.