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Web Development · head to head

Radix UI vs Zipkin

Radix UI logo

Radix UI

Web Development

Unstyled, accessible React component primitives

From
Free
Rated
-
Full reviewWebsite
Zipkin logo

Zipkin

Cloud

Distributed tracing system for microservice latency

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Radix UI you write all the styling, so time to a finished interface is much longer than with a styled library; Zipkin less active development and smaller community momentum than Jaeger
  • They diverge on capability: Radix UI covers Unstyled primitives, Zipkin covers Trace collection and search.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Radix UI and Zipkin actually diverge.

Attributes where Radix UI and Zipkin differ
AttributeRadix UIZipkin
PlatformsWebLinux, Docker, Kubernetes, Self-hosted
CategoryWeb DevelopmentCloud

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 Radix UI

  • Unstyled primitives
  • Accessibility built in
  • Composable API
  • Controlled or uncontrolled

Only in Zipkin

  • Trace collection and search
  • Dependency diagram
  • Simple deployment
  • Pluggable storage

What people use each for

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

Radix UI

  • Design systems that need correct accessibility without inherited visual opinionsnot Zipkin
  • Replacing hand-built dropdowns and dialogs that have accessibility bugsnot Zipkin
  • Teams with a designer whose output should not be constrained by a library’s themenot Zipkin

Zipkin

  • Adding distributed tracing quickly without standing up heavy infrastructurenot Radix UI
  • Java and Spring Boot estates, where instrumentation support is long-establishednot Radix UI
  • Small deployments where Jaeger is more than the problem requiresnot Radix UI

Where each one falls short

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

Radix UI

  • You write all the styling, so time to a finished interface is much longer than with a styled library
  • Composable part-based APIs are more verbose than a single component with props
  • Covers primitives rather than complex widgets, so data grids and date pickers come from elsewhere

Zipkin

  • Less active development and smaller community momentum than Jaeger
  • Fewer features: sampling, storage options and UI are all more limited
  • The interface is dated and slower to work with on large trace volumes
  • Tracing alone still leaves metrics and logs in separate tools during an incident

Pricing, plan by plan

Radix UI

Free
  • Radix UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Zipkin

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

Which should you pick?

Choose Radix UI if

  • You need unstyled primitives.
  • You want to start without paying.
  • You also want accessibility built in.
Radix UI review

Choose Zipkin if

  • You need trace collection and search.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want dependency diagram.
Zipkin review

Questions people ask

Is Radix UI or Zipkin better?
Neither clearly leads. Radix UI starts at Free and Zipkin at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Radix UI or Zipkin?
Radix UI starts at Free and Zipkin at Free.
Does Radix UI or Zipkin run on more platforms?
Radix UI runs on Web. Zipkin runs on Linux, Docker, Kubernetes, Self-hosted.
Can I use Radix UI for free?
Both have a free tier, so you can try either at no cost before committing.
What is Radix UI best used for?
Radix UI is most often used for design systems that need correct accessibility without inherited visual opinions, replacing hand-built dropdowns and dialogs that have accessibility bugs, teams with a designer whose output should not be constrained by a library’s theme. Of those, design systems that need correct accessibility without inherited visual opinions and replacing hand-built dropdowns and dialogs that have accessibility bugs are not what Zipkin is typically brought in for.
What can Radix UI do that Zipkin cannot?
Radix UI covers Unstyled primitives, Accessibility built in, Composable API, Controlled or uncontrolled. Zipkin covers Trace collection and search, Dependency diagram, Simple deployment, Pluggable storage.

Answered from the vendors’ own pages

Radix UI: Is Radix UI free?

Yes, open source under the MIT licence.

Zipkin: Is Zipkin free?

Yes, open source with no licence fee.

Radix UI: Why use unstyled components?

Because accessibility is the hard part and visual design is the part teams want to own. Radix gives the first and stays out of the second.

Zipkin: Zipkin or Jaeger?

Jaeger has more momentum, more features and CNCF backing. Zipkin is lighter and quicker to stand up, and remains well supported in the Java and Spring ecosystem.

Radix UI: What is the relationship with shadcn/ui?

shadcn/ui is built on Radix primitives, adding Tailwind styling and copy-paste distribution on top.

Zipkin: Does Zipkin work with OpenTelemetry?

Yes. OpenTelemetry can export to Zipkin, which is now the usual way to instrument for it.

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