Softwr

Cloud · head to head

Caddy vs ngrok

Caddy logo

Caddy

Cloud

Web server with automatic HTTPS by default

From
Free
Rated
-
Full reviewWebsite
ngrok logo

ngrok

Networking

Reverse tunnel service that gives a local or private service a public URL without opening a firewall

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Caddy smaller ecosystem than Nginx, so third-party guides and modules are fewer; ngrok free HTTP endpoints show a browser interstitial before the page loads, which breaks first impressions in demos and confuses anyone you send the link to.
  • They diverge on capability: Caddy covers Automatic HTTPS, ngrok covers Outbound agent tunnels.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Caddy and ngrok actually diverge.

Attributes where Caddy and ngrok differ
AttributeCaddyngrok
Pricing modelOpen source, no licence feePer user per month
PlatformsLinux, macOS, Windows, DockerLinux, macOS, Windows, Docker, Kubernetes
CategoryCloudNetworking

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 Caddy

  • Automatic HTTPS
  • Caddyfile
  • Reverse proxy
  • Single binary

Only in ngrok

  • Outbound agent tunnels
  • Static domains
  • Traffic policy
  • Request inspection
  • Kubernetes ingress
  • TCP and TLS endpoints

What people use each for

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

Caddy

  • Sites and services where expired certificates have caused outages beforenot ngrok
  • Small deployments where Nginx configuration is more effort than the problem warrantsnot ngrok
  • Reverse proxying internal services with TLS without a certificate workflownot ngrok

ngrok

  • Receiving webhooks from a payment or messaging provider on a laptop during developmentnot Caddy
  • Demonstrating a work in progress application to someone outside the network without deploying itnot Caddy
  • Publishing a service inside a private network or Kubernetes cluster without a public load balancernot Caddy
  • Giving a partner a temporary authenticated endpoint into an internal APInot Caddy

Where each one falls short

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

Caddy

  • Smaller ecosystem than Nginx, so third-party guides and modules are fewer
  • Adding plugins means rebuilding the binary rather than loading a module
  • Under very high throughput Nginx generally still benchmarks ahead
  • Automatic certificate issuance needs outbound internet access, which complicates air-gapped deployments

ngrok

  • Free HTTP endpoints show a browser interstitial before the page loads, which breaks first impressions in demos and confuses anyone you send the link to.
  • All traffic passes through ngrok infrastructure, so you inherit its latency and an ngrok incident takes every published endpoint down at once with no local failover.
  • Pricing is per user seat plus allowances, so a platform team publishing many endpoints ends up buying seats for people who never open the dashboard.
  • Bandwidth is metered on paid tiers, so a workload that quietly grows into serving real traffic produces overage rather than a flat bill.
  • Traffic policy configuration is specific to ngrok, so the authentication and routing logic you accumulate at the edge has to be rebuilt if you later move to a conventional ingress.

Pricing, plan by plan

Caddy

Free
  • CaddyFree
    • Full functionality
    • Commercial use permitted
    • Community support

ngrok

Free
  • FreeFree
    • One static domain
    • HTTP endpoints with a browser interstitial
    • Limited simultaneous connections
  • Personal$undefined/month
    • Removes the interstitial warning page
    • Additional reserved domains
    • TCP endpoints
  • Pro$undefined/month
    • Per user billing with team accounts
    • Traffic policy rules and edge authentication
    • Higher bandwidth allowances
  • Enterprise$undefined/year
    • Custom terms and volume pricing
    • Dedicated capacity options
    • Compliance and audit requirements

Which should you pick?

Choose Caddy if

  • You need automatic https.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker.
  • You also want caddyfile.
Caddy review

Choose ngrok if

  • You need outbound agent tunnels.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, Docker, Kubernetes.
  • You also want static domains.
ngrok review

Questions people ask

Is Caddy or ngrok better?
Neither clearly leads. Caddy starts at Free and ngrok at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Caddy or ngrok?
Caddy starts at Free and ngrok at Free.
Does Caddy or ngrok run on more platforms?
Caddy runs on Linux, macOS, Windows, Docker. ngrok runs on Linux, macOS, Windows, Docker, Kubernetes.
Can I use Caddy for free?
Both have a free tier, so you can try either at no cost before committing.
What is Caddy best used for?
Caddy is most often used for sites and services where expired certificates have caused outages before, small deployments where nginx configuration is more effort than the problem warrants, reverse proxying internal services with tls without a certificate workflow. Of those, sites and services where expired certificates have caused outages before and small deployments where nginx configuration is more effort than the problem warrants are not what ngrok is typically brought in for.
What can Caddy do that ngrok cannot?
Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary. ngrok covers Outbound agent tunnels, Static domains, Traffic policy, Request inspection.

Answered from the vendors’ own pages

Caddy: Is Caddy free?

Yes, open source under the Apache 2.0 licence, free for commercial use.

ngrok: Can I use it in production?

It is sold for that now, with static domains, policy rules and a Kubernetes operator. The question is whether you accept a third party on the traffic path for every request.

Caddy: What does automatic HTTPS mean?

Caddy obtains certificates from Let’s Encrypt or ZeroSSL on first request and renews them before expiry, with no cron job or configuration.

ngrok: Why does my free URL show a warning page?

Free HTTP endpoints carry an interstitial. Removing it requires a paid plan, and it is the most common reason people upgrade.

Caddy: Caddy or Nginx?

Caddy is dramatically simpler to configure and removes certificate management. Nginx has the larger ecosystem and better peak throughput.

ngrok: Does it work for SSH or a database?

Yes through TCP endpoints, which are a paid feature.

ngrok: What is the self hosted alternative?

A reverse proxy on a server you own with a tunnel back to the service, or one of the self hosted tunnel projects. All of them cost more setup time than the thing they replace.

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