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Radix UI vs Tilt

Radix UI logo

Radix UI

Web Development

Unstyled, accessible React component primitives

From
Free
Rated
-
Full reviewWebsite
Tilt logo

Tilt

Developer Tools

Local Kubernetes development loop that rebuilds and live-updates containers on save

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; Tilt docker acquired Tilt in 2022 and the team now splits its time across Compose and Docker Desktop, so feature velocity is modest and the product's long-term priority inside Docker is not guaranteed; treat it as a stable utility, not a growing platform.
  • They diverge on capability: Radix UI covers Unstyled primitives, Tilt covers Live update.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

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

Attributes where Radix UI and Tilt differ
AttributeRadix UITilt
PlatformsWebLinux, macOS, Windows
CategoryWeb DevelopmentDeveloper Tools

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 Tilt

  • Live update
  • Tiltfile as code
  • Unified web UI
  • Selective rebuilds
  • Local and remote clusters
  • Resource dependencies
  • Extensions registry
  • Custom buttons and triggers

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 Tilt
  • Replacing hand-built dropdowns and dialogs that have accessibility bugsnot Tilt
  • Teams with a designer whose output should not be constrained by a library’s themenot Tilt

Tilt

  • A team of ten or more engineers whose application is fifteen microservices on Kubernetes and who currently wait on CI to test a changenot Radix UI
  • An organisation onboarding new developers who want a single command that stands up the whole stack from a committed Tiltfilenot Radix UI
  • A platform team giving product engineers a consistent local environment against a shared remote development clusternot Radix UI
  • A codebase where one repository contains several services and rebuilding all of them on every edit is the main source of lost timenot 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

Tilt

  • Docker acquired Tilt in 2022 and the team now splits its time across Compose and Docker Desktop, so feature velocity is modest and the product's long-term priority inside Docker is not guaranteed; treat it as a stable utility, not a growing platform.
  • The Tiltfile is Starlark, a Python dialect, so non-trivial setups become real programs that need reviewing and maintaining, and the person who wrote yours becomes a single point of failure.
  • Live update only works when the running container can accept synced files and restart the process; compiled languages, distroless images and read-only filesystems often force you back to a full image rebuild, which removes the main benefit.
  • It assumes Kubernetes. If your development target is plain Docker Compose or serverless functions, Tilt adds a cluster you did not need and a layer of abstraction with no payoff.
  • There is no commercial support contract, no SLA and no paid tier, so when a Kubernetes version upgrade breaks something you are dependent on GitHub issues and a Slack channel rather than a vendor you can escalate to.

Pricing, plan by plan

Radix UI

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

Tilt

Free
  • TiltFree
    • Apache 2.0 licensed
    • All features, no paid tier
    • Community support via the Kubernetes Slack #tilt channel

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 Tilt if

  • You need live update.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want tiltfile as code.
Tilt review

Questions people ask

Is Radix UI or Tilt better?
Neither clearly leads. Radix UI starts at Free and Tilt at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Radix UI or Tilt?
Radix UI starts at Free and Tilt at Free.
Does Radix UI or Tilt run on more platforms?
Radix UI runs on Web. Tilt runs on Linux, macOS, Windows.
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 Tilt is typically brought in for.
What can Radix UI do that Tilt cannot?
Radix UI covers Unstyled primitives, Accessibility built in, Composable API, Controlled or uncontrolled. Tilt covers Live update, Tiltfile as code, Unified web UI, Selective rebuilds.

Answered from the vendors’ own pages

Radix UI: Is Radix UI free?

Yes, open source under the MIT licence.

Tilt: Is Tilt free?

Yes, entirely. It is Apache 2.0 open source with no paid tier and 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.

Tilt: Who owns Tilt now?

Docker, which acquired it in May 2022. It remains open source and the repository is still actively maintained.

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.

Tilt: Do I need a remote cluster?

No. It works against a local cluster such as kind, minikube or Docker Desktop, and also against a shared remote development cluster if your services are too heavy to run locally.

Tilt: How is it different from Skaffold?

Both automate the build-deploy loop. Tilt puts more weight on the live-update path and a multi-service dashboard; Skaffold is more configuration-driven and closer to Google's tooling.

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