Nebula vs Tailscale
A detailed comparison to help you choose between Nebula and Tailscale.
Quick Verdict
3.9/5
Nebula
0 reviews
4.1/5
Tailscale
0 reviews
Tailscale is rated higher (4.1 vs 3.9). Nebula is an open source scalable overlay networking tool built by Slack engineers. Creates a flat network where distributed nodes communicate securely. Firewall rules in the protocol. Tailscale creates a private WireGuard mesh between all your servers and devices with zero config. Works through firewalls and NAT. Free Personal plan for non-commercial use: up to 6 users with unlimited user devices.
Nebula Scalable overlay network built by Slack | Tailscale Zero-config WireGuard mesh VPN for your infra | |
|---|---|---|
| Overview | ||
| Rating | 3.9 (0 reviews) | 4.1 (0 reviews)✓ |
| Pricing model | free | freemium |
| Starting price | Free | Free tier available |
| Best for | Infrastructure engineers building a large self-hosted mesh across clouds and colos who want identity-based networking with no SaaS dependency and can run a certificate authority safely. | Developers and small teams running servers across multiple providers who want secure mesh connectivity without managing bastions, VPN concentrators or firewall rules |
| Features | ||
| IPv6 | ✓ | |
| DDoS protection | ||
| Automated backups | ||
| Snapshots | ||
| Managed option | ||
| Bare metal | ||
| GPU available | ||
| S3-compatible | ||
| Hourly billing | ||
| Free tier | ||
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen sourceapi accessteam features |
| Visit Nebula → | Visit Tailscale → | |
Nebula
Pros
- + Free and open source; no vendor sits on your data path
- + Proven at scale — Slack's overlay runs on 50,000+ documented production hosts
- + Modern, non-homegrown crypto: Noise Protocol Framework, Curve25519/P256, AES-256-GCM
- + Certificate-based identity with groups-style firewall rules enforced between peers
- + Direct peer-to-peer tunnels with NAT traversal; lighthouses handle discovery only
Cons
- - You run the PKI: CA key custody, one-year default CA lifetime, certificate signing per node
- - No GUI, no hosted control plane, no SSO in the open-source edition
- - Operationally steeper than WireGuard and much steeper than managed mesh products
- - Overlay IPv6 and mobile client polish lag the desktop experience
- - No support contract or SLA unless you buy the third-party managed offering
Tailscale
Pros
- + Near-zero-config WireGuard mesh: devices connect peer-to-peer through NAT with no firewall surgery
- + Free forever for non-commercial use (up to 6 users, unlimited user devices)
- + Seat-based billing is predictable; invited-but-inactive users do not occupy seats
- + Full IPv6 support inside the tailnet plus IPv4/IPv6 interoperability via relays
- + Open-source clients; self-hostable control plane (Headscale) exists for the trust-constrained
Cons
- - Proprietary hosted control plane coordinates key exchange and sees network metadata
- - Not a privacy VPN — anonymous internet exit is an add-on or your own exit node
- - SLA-backed support is a paid add-on package on every plan, including Premium
- - Tagged-resource and ephemeral-minute meters can raise the bill for Kubernetes-heavy fleets
- - Seat overage auto-charges and is not refunded when seats are reduced afterwards
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