Softwr

Cloud · head to head

Cilium vs shadcn/ui

Cilium logo

Cilium

Cloud

eBPF-based networking, observability and security for Kubernetes

From
Free
Rated
-
Full reviewWebsite
shadcn/ui logo

shadcn/ui

Web Development

Copy-paste React components you own, not a dependency

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Cilium requires a recent Linux kernel, which rules out older distributions and some managed environments; shadcn/ui no upgrade path: once copied, upstream fixes and improvements are yours to port by hand
  • They diverge on capability: Cilium covers eBPF datapath, shadcn/ui covers Copy, not install.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Cilium and shadcn/ui actually diverge.

Attributes where Cilium and shadcn/ui differ
AttributeCiliumshadcn/ui
PlatformsKubernetes, LinuxWeb
CategoryCloudWeb Development

Identical on both: starting price (Free), pricing model (Open source, no licence fee), 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 Cilium

  • eBPF datapath
  • Identity-based policy
  • Hubble observability
  • Sidecar-free mesh

Only in shadcn/ui

  • Copy, not install
  • Radix primitives
  • Tailwind styling
  • Themeable

What people use each for

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

Cilium

  • Kubernetes networking at a scale where iptables-based CNI performance degradesnot shadcn/ui
  • Network policy expressed on workload identity rather than fragile IP rulesnot shadcn/ui
  • Seeing which services actually talk to each other, and what policy is droppingnot shadcn/ui

shadcn/ui

  • Projects already using Tailwind that need accessible components without a theming fightnot Cilium
  • Design systems that will diverge from any library’s defaults anywaynot Cilium
  • Teams who have been burned by breaking changes in component library upgradesnot Cilium

Where each one falls short

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

Cilium

  • Requires a recent Linux kernel, which rules out older distributions and some managed environments
  • eBPF is genuinely hard to debug when it misbehaves, and the skill is rare on most teams
  • Broad scope — CNI, policy, mesh, observability — means the learning curve covers several domains at once

shadcn/ui

  • No upgrade path: once copied, upstream fixes and improvements are yours to port by hand
  • Requires Tailwind and React, so it is not an option outside that stack
  • Component code lives in your repository, which grows it and puts maintenance on your team
  • Its popularity has made the default look recognisable, which undercuts the customisation argument

Pricing, plan by plan

Cilium

Free
  • CiliumFree
    • Full functionality
    • No usage limits
    • Community support

shadcn/ui

Free
  • shadcn/uiFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Cilium if

  • You need ebpf datapath.
  • You want to start without paying.
  • You work on Kubernetes, Linux.
  • You also want identity-based policy.
Cilium review

Choose shadcn/ui if

  • You need copy, not install.
  • You want to start without paying.
  • You also want radix primitives.
shadcn/ui review

Questions people ask

Is Cilium or shadcn/ui better?
Neither clearly leads. Cilium starts at Free and shadcn/ui at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Cilium or shadcn/ui?
Cilium starts at Free and shadcn/ui at Free.
Does Cilium or shadcn/ui run on more platforms?
Cilium runs on Kubernetes, Linux. shadcn/ui runs on Web.
Can I use Cilium for free?
Both have a free tier, so you can try either at no cost before committing.
What is Cilium best used for?
Cilium is most often used for kubernetes networking at a scale where iptables-based cni performance degrades, network policy expressed on workload identity rather than fragile ip rules, seeing which services actually talk to each other, and what policy is dropping. Of those, kubernetes networking at a scale where iptables-based cni performance degrades and network policy expressed on workload identity rather than fragile ip rules are not what shadcn/ui is typically brought in for.
What can Cilium do that shadcn/ui cannot?
Cilium covers eBPF datapath, Identity-based policy, Hubble observability, Sidecar-free mesh. shadcn/ui covers Copy, not install, Radix primitives, Tailwind styling, Themeable.

Answered from the vendors’ own pages

Cilium: Is Cilium free?

Yes, open source and CNCF-graduated. Isovalent sells an enterprise distribution and support.

shadcn/ui: Is shadcn/ui free?

Yes, open source and free for commercial use.

Cilium: What does eBPF change?

It lets Cilium run packet-processing programs inside the kernel instead of relying on iptables rule chains, which behave poorly as the number of services grows.

shadcn/ui: Why is it not an npm package?

So you own the code. Components are copied into your project, which makes customisation trivial — at the cost of receiving no automatic updates.

Cilium: Does Cilium replace a service mesh?

It can cover much of what a mesh does without sidecars, though full mesh feature sets still favour Istio or Linkerd.

shadcn/ui: Do I need Tailwind?

Yes. Components are styled with Tailwind utility classes and built on Radix primitives, so both are required.

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