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Cloud · head to head

Caddy vs Socket

Caddy logo

Caddy

Cloud

Web server with automatic HTTPS by default

From
Free
Rated
-
Full reviewWebsite
Socket logo

Socket

Cybersecurity

Supply chain security platform detecting and blocking malicious dependencies

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; Socket team plan requires minimum 5-developer commitment, expensive for small teams
  • They diverge on capability: Caddy covers Automatic HTTPS, Socket covers Malware detection.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Caddy and Socket actually diverge.

Attributes where Caddy and Socket differ
AttributeCaddySocket
Pricing modelOpen source, no licence feePer-developer monthly subscription with tiered access
PlatformsLinux, macOS, Windows, DockerWeb, CLI, GitHub
CategoryCloudCybersecurity
FoundedUnknown2021

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 Socket

  • Malware detection
  • Automatic blocking
  • AI behavior analysis
  • Reachability analysis
  • Slack integration
  • SBOM support
  • SAML SSO
  • GitHub Actions scanning

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

Socket

  • Blocking zero-day malware attacks in JavaScript dependenciesnot Caddy
  • Managing CVE false positives with precomputed reachability analysisnot Caddy
  • Securing Python and Go supply chains at scalenot Caddy
  • Automating compliance requirements for regulated industriesnot Caddy
  • Real-time threat notifications via Slack integrationnot 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

Socket

  • Team plan requires minimum 5-developer commitment, expensive for small teams
  • Business plan $50/dev/month becomes costly for teams exceeding 20 members
  • Enterprise pricing requires custom consultation with no transparent pricing
  • Free plan limited to individual developers without team collaboration
  • Reachability analysis improvement (90% false positive reduction) only on Enterprise

Pricing, plan by plan

Caddy

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

Socket

Free
  • FreeFree
    • For individual developers
    • Detects 70+ risk types
    • Blocks malicious dependencies automatically
  • Team$25/month
    • Per developer on minimum 5 developers
    • Precomputed reachability analysis cuts 60% false positives
    • Slack alerts for threats
  • Business$50/month
    • Per developer on minimum 20 developers
    • All Team features
    • Compliance integrations with Vanta
  • Enterprise$undefined/custom
    • Function-level reachability eliminates up to 90% irrelevant CVEs
    • Multi-repository system support
    • Named account manager

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 Socket if

  • You need malware detection.
  • You want to start without paying.
  • You work on Web, CLI, GitHub.
  • You also want automatic blocking.
Socket review

Questions people ask

Is Caddy or Socket better?
Neither clearly leads. Caddy starts at Free and Socket at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Caddy or Socket?
Caddy starts at Free and Socket at Free.
Does Caddy or Socket run on more platforms?
Caddy runs on Linux, macOS, Windows, Docker. Socket runs on Web, CLI, GitHub.
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 Socket is typically brought in for.
What can Caddy do that Socket cannot?
Caddy covers Automatic HTTPS, Caddyfile, Reverse proxy, Single binary. Socket covers Malware detection, Automatic blocking, AI behavior analysis, Reachability analysis.

Answered from the vendors’ own pages

Caddy: Is Caddy free?

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

Socket: How many zero-day attacks does Socket detect?

Socket detects over 100 zero-day attacks weekly across JavaScript, Python, and Go ecosystems.

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.

Socket: What is precomputed reachability analysis?

Socket's precomputed reachability analysis cuts CVE false positives by 60% automatically on Team plans, and up to 90% on Enterprise plans through function-level analysis.

Source
Caddy: Caddy or Nginx?

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

Socket: Is there a discount for annual billing?

Yes. Socket offers a 20% discount for annual commitments across all subscription tiers.

Source
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