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Cloud · head to head

Caddy vs Sysdig

Caddy logo

Caddy

Cloud

Web server with automatic HTTPS by default

From
Free
Rated
-
Full reviewWebsite
Sysdig logo

Sysdig

Cybersecurity

Cloud-native runtime security platform with real-time detection and response

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Caddy has a free tier, so it costs nothing to try first.
  • Each has a real cost: Caddy smaller ecosystem than Nginx, so third-party guides and modules are fewer; Sysdig custom pricing requires sales contact, difficult to compare costs
  • They diverge on capability: Caddy covers Automatic HTTPS, Sysdig covers Real-time threat detection and response.

Where they differ

Only the attributes on which Caddy and Sysdig actually diverge.

Attributes where Caddy and Sysdig differ
AttributeCaddySysdig
Starting priceFreeOn request
Pricing modelOpen source, no licence feeCustom pricing based on number of hosts, events processed, or time series data
Free tierYesNo
PlatformsLinux, macOS, Windows, DockerKubernetes, Docker, AWS, GCP, Azure, Cloud-native
CategoryCloudCybersecurity
FoundedUnknown2013

Identical on both: 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 Sysdig

  • Real-time threat detection and response
  • Runtime intelligence
  • AI-powered security agents
  • Vulnerability management
  • Cloud Security Posture Management
  • Container and Kubernetes security
  • Infrastructure as Code security
  • Cloud Infrastructure Entitlement Management

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 Sysdig
  • Small deployments where Nginx configuration is more effort than the problem warrantsnot Sysdig
  • Reverse proxying internal services with TLS without a certificate workflownot Sysdig

Sysdig

  • Real-time threat detection in Kubernetes clustersnot Caddy
  • Container workload vulnerability prioritizationnot Caddy
  • Cloud security posture compliance monitoringnot Caddy
  • Infrastructure entitlement and permission analysisnot Caddy
  • AI workload security and threat remediationnot 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

Sysdig

  • Custom pricing requires sales contact, difficult to compare costs
  • No published pricing tiers or calculator available
  • Primarily focused on cloud-native environments
  • Requires integration with existing SIEM or monitoring tools for full visibility
  • Steep learning curve for runtime security concepts

Pricing, plan by plan

Caddy

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

Sysdig

On request

No published plan breakdown. See the Sysdig review.

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 Sysdig if

  • You need real-time threat detection and response.
  • You work on Kubernetes, Docker, AWS, GCP, Azure, Cloud-native.
  • You also want runtime intelligence.
Sysdig review

Questions people ask

Is Caddy or Sysdig better?
Neither clearly leads. Caddy starts at Free and Sysdig at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Caddy or Sysdig?
Caddy has a free tier; the other does not. Paid plans start at Free for Caddy and On request for Sysdig.
Does Caddy or Sysdig run on more platforms?
Caddy runs on Linux, macOS, Windows, Docker. Sysdig runs on Kubernetes, Docker, AWS, GCP, Azure, Cloud-native.
Can I use Caddy for free?
Yes. Caddy has a free tier, so you can try it without paying. Sysdig starts at On request.
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 Sysdig is typically brought in for.
What can Caddy do that Sysdig cannot?
Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary. Sysdig covers Real-time threat detection and response, Runtime intelligence, AI-powered security agents, Vulnerability management.

Answered from the vendors’ own pages

Caddy: Is Caddy free?

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

Sysdig: How does Sysdig achieve real-time threat detection?

Sysdig uses runtime intelligence with kernel-level system visibility, capturing live system calls to detect threats at machine speed, typically within 2 seconds.

Source
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.

Sysdig: What is runtime intelligence and how does it differ from configuration-based security?

Runtime intelligence reveals what is actually executing in cloud environments through kernel-level visibility, rather than relying on theoretical risks from configuration analysis alone.

Source
Caddy: Caddy or Nginx?

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

Sysdig: What cloud platforms does Sysdig support?

Sysdig supports AWS, GCP, Azure, and IBM Cloud with multiple regional data centers across US, EU, and other regions.

Source
Sysdig: Does Sysdig integrate with existing security tools?

Yes, Sysdig integrates with existing SIEM and monitoring tools to provide unified security visibility across cloud infrastructure.

Source
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