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Base UI vs Libby

Base UI logo

Base UI

Libraries

Unstyled accessible React primitives built by the teams behind Radix, Material UI and Floating UI

From
Free
Rated
-
Full reviewWebsite
Libby logo

Libby

Libraries

Free ebook and audiobook app from OverDrive, gated entirely on an active public library card

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Base UI nothing is styled, so the first weeks produce a functional but unfinished interface, and a team without design capacity will ship something worse looking than a styled library would have given them free.; Libby popular and new titles are frequently unavailable for weeks or months due to holds queues, which makes it unreliable for reading something the day you want to start it.
  • They diverge on capability: Base UI covers Unstyled primitives, Libby covers Library card authentication.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Base UI and Libby actually diverge.

Attributes where Base UI and Libby differ
AttributeBase UILibby
Pricing modelOpen source, no licence feeFree with a participating library card, no subscription
PlatformsWebiOS, Android, Web, Kindle (for ebooks)

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Libraries).

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 Base UI

  • Unstyled primitives
  • Focus and keyboard management
  • ARIA state handling
  • Collision aware positioning
  • Composable parts
  • Server rendering safe

Only in Libby

  • Library card authentication
  • Holds queues
  • Multi-library support
  • OverDrive Read and Listen
  • Send to Kindle
  • Tags and shelves

What people use each for

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

Base UI

  • Building a design system where the visual language must be entirely your ownnot Libby
  • Applications with an accessibility conformance obligation that need correct behaviour as the foundationnot Libby
  • Replacing a styled component library that is being fought rather than usednot Libby
  • Teams already writing Tailwind who want behaviour without a second opinion about appearancenot Libby

Libby

  • A reader who wants free access to bestsellers and is willing to wait weeks in a holds queue for popular new releasesnot Base UI
  • Someone who holds cards for multiple library systems and wants to widen their available catalogue in one appnot Base UI
  • A reader who wants ebooks sent directly to a Kindle without buying themnot Base UI
  • A budget-conscious reader who already pays library taxes and wants to use the benefit fully instead of also paying for Everand or Storytelnot Base UI

Where each one falls short

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

Base UI

  • Nothing is styled, so the first weeks produce a functional but unfinished interface, and a team without design capacity will ship something worse looking than a styled library would have given them free.
  • The project is young and its APIs have changed between releases, so upgrades need reading rather than accepting, and version pinning is currently a necessity.
  • Component coverage is narrower than the mature styled libraries, so date pickers, tables and rich inputs will still come from elsewhere or be built.
  • There is no commercial support and no conformance certification to point at, so an organisation that must evidence accessibility still has to commission its own audit.
  • Consolidating the Radix and Material UI unstyled efforts here leaves the earlier libraries with an uncertain maintenance future, which is a live risk for the many applications built on Radix through shadcn/ui.

Libby

  • Popular and new titles are frequently unavailable for weeks or months due to holds queues, which makes it unreliable for reading something the day you want to start it.
  • Borrow and hold limits are set per library, so the experience is inconsistent between library systems and can change without notice.
  • Not every library subscribes to OverDrive, and even those that do vary hugely in how many digital copies of any given title they can afford to licence.
  • It requires a real library card tied to residency or another eligibility rule in most systems, so it is not available to everyone regardless of willingness to pay.
  • There is no offline bulk downloading beyond what is borrowed, and loan periods expire automatically, returning the book whether or not you finished it.

Pricing, plan by plan

Base UI

Free
  • Base UI$undefined/year
    • MIT licensed and free for commercial use
    • No paid tier, no enterprise edition and no support contract available

Libby

Free
  • LibbyFree
    • Free with an eligible library card
    • Borrow limits set by your library, not Libby
    • Holds queues on licensed copies

Which should you pick?

Choose Base UI if

  • You need unstyled primitives.
  • You want to start without paying.
  • You also want focus and keyboard management.
Base UI review

Choose Libby if

  • You need library card authentication.
  • You want to start without paying.
  • You work on iOS, Android, Web, Kindle (for ebooks).
  • You also want holds queues.
Libby review

Questions people ask

Is Base UI or Libby better?
Neither clearly leads. Base UI starts at Free and Libby at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Base UI or Libby?
Base UI starts at Free and Libby at Free.
Does Base UI or Libby run on more platforms?
Base UI runs on Web. Libby runs on iOS, Android, Web, Kindle (for ebooks).
Can I use Base UI for free?
Both have a free tier, so you can try either at no cost before committing.
What is Base UI best used for?
Base UI is most often used for building a design system where the visual language must be entirely your own, applications with an accessibility conformance obligation that need correct behaviour as the foundation, replacing a styled component library that is being fought rather than used, teams already writing tailwind who want behaviour without a second opinion about appearance. Of those, building a design system where the visual language must be entirely your own and applications with an accessibility conformance obligation that need correct behaviour as the foundation are not what Libby is typically brought in for.
What can Base UI do that Libby cannot?
Base UI covers Unstyled primitives, Focus and keyboard management, ARIA state handling, Collision aware positioning. Libby covers Library card authentication, Holds queues, Multi-library support, OverDrive Read and Listen.

Answered from the vendors’ own pages

Base UI: Does this replace Radix UI?

It is where much of the same maintenance attention has moved. If you are on Radix, watch its release activity rather than assuming continuity.

Libby: Do I pay for Libby?

No, it is free, but you need an active card from a library that uses the OverDrive/Libby system.

Base UI: What does it affect for shadcn/ui users?

shadcn/ui components are built on Radix primitives, so the health of Radix is your dependency question, not a theoretical one.

Libby: Why is the book I want unavailable?

Libraries licence a limited number of digital copies, so popular titles go into a holds queue just like physical books.

Base UI: Is it ready for production?

For the components it covers, yes, provided you pin versions and read release notes. The range is narrower than mature libraries, so check coverage against your needs first.

Libby: Can I use Libby without a library card?

No, a valid card and PIN from a participating library are required for every feature.

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