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Networking · head to head

Nebula vs Ubiquiti UniFi

Nebula logo

Nebula

Networking

Certificate based overlay network from Slack, with identity and firewall rules carried in the certificate

From
Free
Rated
-
Full reviewWebsite
Ubiquiti UniFi logo

Ubiquiti UniFi

Networking

Effortlessly manage 100+ APs in the same way you manage an individual AP

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Nebula has a free tier, so it costs nothing to try first.
  • Each has a real cost: Nebula the open source project has no user interface, no enrolment workflow and no revocation service, so certificate issuing, distribution and expiry become scripts you write and then have to keep working.; Ubiquiti UniFi product page states no licensing fees but publishes no hardware price; buyers must go to the Ubiquiti Store or an authorized distributor for a figure
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Nebula and Ubiquiti UniFi actually diverge.

Attributes where Nebula and Ubiquiti UniFi differ
AttributeNebulaUbiquiti UniFi
Starting priceFreeOn request
Pricing modelOpen source, no licence feeone-time
Free tierYesNo
PlatformsLinux, macOS, Windows, iOS, Android, FreeBSDWeb

Identical on both: user rating (Not yet rated), category (Networking).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Nebula

  • Certificate carried identity
  • Group based host firewall
  • Lighthouse discovery
  • Noise protocol encryption
  • Unsafe routes
  • Managed option

Only in Ubiquiti UniFi

Nothing recorded that Nebula does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Nebula

  • Flattening a network across several clouds and datacentres without VPC peering or route tablesnot Ubiquiti UniFi
  • Very large fleets where a central policy service on the connection path is unacceptablenot Ubiquiti UniFi
  • Environments that already run an internal certificate authority and want the network to use itnot Ubiquiti UniFi
  • Replacing per host iptables rules with policy written against roles that follow the hostnot Ubiquiti UniFi

Ubiquiti UniFi

No use cases recorded yet. See the Ubiquiti UniFi review.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Nebula

  • The open source project has no user interface, no enrolment workflow and no revocation service, so certificate issuing, distribution and expiry become scripts you write and then have to keep working.
  • Revoking a compromised host means distributing a blocklist entry to every other host and reloading them, which is a fleet wide operation rather than a click, and easy to get wrong under pressure.
  • Changing a host group membership means reissuing and redeploying its certificate, so policy changes are a deployment rather than a configuration edit.
  • There is no identity provider integration or single sign on in the open source version, so it maps well to servers and badly to a fleet of user laptops.
  • NAT traversal is best effort and hosts behind symmetric NAT need a relay configured deliberately, so connectivity failures show up as intermittent rather than immediate and are awkward to diagnose.

Ubiquiti UniFi

  • Product page states no licensing fees but publishes no hardware price; buyers must go to the Ubiquiti Store or an authorized distributor for a figure
  • Newest WiFi 7 access points such as the U7 Pro require compatible UniFi controller hardware or cloud console to manage centrally

Pricing, plan by plan

Nebula

Free
  • NebulaFree
    • Full functionality under the MIT licence
    • No host limit
    • You operate the certificate authority and lighthouses
  • Defined Networking$undefined/month
    • Hosted control plane and enrolment
    • Managed certificate lifecycle and revocation
    • Policy and DNS interface

Ubiquiti UniFi

On request

No published plan breakdown. See the Ubiquiti UniFi review.

Which should you pick?

Choose Nebula if

  • You need certificate carried identity.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, iOS, Android, FreeBSD.
  • You also want group based host firewall.
Nebula review

Choose Ubiquiti UniFi if

Nothing in the data separates Ubiquiti UniFi from Nebula on the points above - pick on price and on how each one feels to use.

Ubiquiti UniFi review

Questions people ask

Is Nebula or Ubiquiti UniFi better?
Neither clearly leads. Nebula starts at Free and Ubiquiti UniFi at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Nebula or Ubiquiti UniFi?
Nebula has a free tier; the other does not. Paid plans start at Free for Nebula and On request for Ubiquiti UniFi.
Does Nebula or Ubiquiti UniFi run on more platforms?
Nebula runs on Linux, macOS, Windows, iOS, Android, FreeBSD. Ubiquiti UniFi runs on Web.
Can I use Nebula for free?
Yes. Nebula has a free tier, so you can try it without paying. Ubiquiti UniFi starts at On request.
What is Nebula best used for?
Nebula is most often used for flattening a network across several clouds and datacentres without vpc peering or route tables, very large fleets where a central policy service on the connection path is unacceptable, environments that already run an internal certificate authority and want the network to use it, replacing per host iptables rules with policy written against roles that follow the host. Of those, flattening a network across several clouds and datacentres without vpc peering or route tables and very large fleets where a central policy service on the connection path is unacceptable are not what Ubiquiti UniFi is typically brought in for.
What can Nebula do that Ubiquiti UniFi cannot?
Nebula covers Certificate carried identity, Group based host firewall, Lighthouse discovery, Noise protocol encryption.

Answered from the vendors’ own pages

Nebula: Does it use WireGuard?

No. Nebula predates the common WireGuard mesh tools and uses the Noise protocol framework with its own certificate format.

Nebula: Can I run it without Defined Networking?

Yes, entirely. Defined Networking sells the control plane conveniences, not the network itself.

Nebula: How do I revoke a host?

Add its certificate fingerprint to the blocklist in the configuration of the other hosts and reload them. There is no online revocation check.

Nebula: Is it a good fit for laptops?

Less so than the identity provider based tools. There is no single sign on, so every laptop needs a certificate issued and renewed by whatever process you build.

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