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Developer Tools · head to head

Helix vs Nebula

Helix logo

Helix

Developer Tools

Post-modern modal text editor for the terminal, written in Rust

From
Free
Rated
-
Full reviewWebsite
Nebula logo

Nebula

Networking

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Helix no official GUI application yet, so it requires comfort with terminal workflows.; 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.
  • They diverge on capability: Helix covers Multiple Selections, Nebula covers Certificate carried identity.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Helix and Nebula actually diverge.

Attributes where Helix and Nebula differ
AttributeHelixNebula
Pricing modelopen-sourceOpen source, no licence fee
Platformslinux, mac, windowsLinux, macOS, Windows, iOS, Android, FreeBSD
CategoryDeveloper ToolsNetworking

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

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 Helix

  • Multiple Selections
  • Tree-sitter Syntax Trees
  • Built-in LSP Support
  • Fuzzy File Finder
  • Project-wide Search

Only in Nebula

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

What people use each for

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

Helix

  • Editing code over SSH or in tmux sessionsnot Nebula
  • Working with syntax-aware selection and navigationnot Nebula
  • Getting IDE-like completion and diagnostics without plugin setupnot Nebula
  • Lightweight, low-resource code editing on laptopsnot Nebula

Nebula

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

Where each one falls short

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

Helix

  • No official GUI application yet, so it requires comfort with terminal workflows.
  • Plugin ecosystem is far smaller than Vim's or Neovim's, limiting customization.
  • Keybindings differ from both Vim and Kakoune, adding a learning curve for users of either.
  • Configuration is more limited than Neovim's Lua-based extensibility.

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.

Pricing, plan by plan

Helix

Free
  • FreeFree
    • Full editor, no paid tiers

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

Which should you pick?

Choose Helix if

  • You need multiple selections.
  • You want to start without paying.
  • You work on linux, mac, windows.
  • You also want tree-sitter syntax trees.
Helix review

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

Questions people ask

Is Helix or Nebula better?
Neither clearly leads. Helix starts at Free and Nebula at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Helix or Nebula?
Helix starts at Free and Nebula at Free.
Does Helix or Nebula run on more platforms?
Helix runs on linux, mac, windows. Nebula runs on Linux, macOS, Windows, iOS, Android, FreeBSD.
Can I use Helix for free?
Both have a free tier, so you can try either at no cost before committing.
What is Helix best used for?
Helix is most often used for editing code over ssh or in tmux sessions, working with syntax-aware selection and navigation, getting ide-like completion and diagnostics without plugin setup, lightweight, low-resource code editing on laptops. Of those, editing code over ssh or in tmux sessions and working with syntax-aware selection and navigation are not what Nebula is typically brought in for.
What can Helix do that Nebula cannot?
Helix covers Multiple Selections, Tree-sitter Syntax Trees, Built-in LSP Support, Fuzzy File Finder. Nebula covers Certificate carried identity, Group based host firewall, Lighthouse discovery, Noise protocol encryption.

Answered from the vendors’ own pages

Helix: Is Helix free to use?

Yes, Helix is free and open source, licensed under the Mozilla Public License 2.0 (MPL-2.0), with no paid tiers or subscriptions.

Source
Nebula: Does it use WireGuard?

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

Helix: How do I install Helix?

Install via your operating system's package manager, or download pre-built binaries from GitHub Releases; the nightly version requires building from source.

Source
Nebula: Can I run it without Defined Networking?

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

Helix: Does Helix support plugins?

Not yet. Helix currently has no plugin system, though the project intends to add one eventually; it instead ships with built-in LSP and tree-sitter support out of the box.

Source
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.

Helix: How do I configure Helix?

Helix ships with sane modern defaults requiring much less config-file fiddling than Vim, though settings can still be customized in a config.toml file.

Source
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.

Helix: Where can I get help or support?

Support is community-driven via GitHub for code and issues, the Matrix chat for discussion, and OpenCollective for funding ongoing development.

Source
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