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APIs · head to head

KeystoneJS vs Weavr

KeystoneJS logo

KeystoneJS

APIs

Powerful Node.js headless CMS framework and API platform

From
Free
Rated
-
Full reviewWebsite
Weavr logo

Weavr

APIs

Packaged embedded finance for B2B SaaS, with an in-house EU e-money licence

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only KeystoneJS has a free tier, so it costs nothing to try first.
  • Each has a real cost: KeystoneJS database support is limited to PostgreSQL, MySQL and SQLite; Weavr products are packaged rather than open, so a flow Weavr does not support is not something you can build around, and you discover the limits after integrating.
  • They diverge on capability: KeystoneJS covers REST API, Weavr covers Plug-and-play products.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which KeystoneJS and Weavr actually diverge.

Attributes where KeystoneJS and Weavr differ
AttributeKeystoneJSWeavr
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsNode.js, Self-hostedWeb, REST API
Founded2016Unknown

Identical on both: user rating (Not yet rated), category (APIs).

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 KeystoneJS

  • REST API
  • GraphQL API
  • Admin interface
  • Node.js
  • Next.js
  • React
  • Databases
  • Node.js support

Only in Weavr

  • Plug-and-play products
  • Regulated cover
  • Card issuing
  • Multi-currency accounts
  • Identity and onboarding
  • Data insights

What people use each for

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

KeystoneJS

  • Headless CMS implementationnot Weavr
  • Content management systemsnot Weavr
  • Customizable API-driven applicationsnot Weavr

Weavr

  • A project management SaaS adding expense cards without hiring a compliance officernot KeystoneJS
  • A marketplace paying out sellers from accounts held inside its own productnot KeystoneJS
  • A procurement platform issuing virtual cards against approved purchase ordersnot KeystoneJS
  • A European SaaS vendor wanting a regulated entity to sit behind its financial featuresnot KeystoneJS

Where each one falls short

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

KeystoneJS

  • Database support is limited to PostgreSQL, MySQL and SQLite
  • Keystone 5 is a separate legacy product documented on a different site and is not covered by the Keystone 6 docs
  • Upgrading requires following a dedicated Migrate to 8.0.0 guide, so major versions are not drop-in
  • Free support is a community Slack; enterprise-grade consulting and support is a separate paid engagement with Thinkmill and no published price

Weavr

  • Products are packaged rather than open, so a flow Weavr does not support is not something you can build around, and you discover the limits after integrating.
  • Programme economics depend on interchange, and SaaS vendors routinely overestimate how much card volume their customers will actually route through the embedded product.
  • It is a small company with limited headcount supporting a regulated dependency, which is a real concentration risk for a feature your customers rely on.
  • Monthly minimums on card programmes mean a slow-adopting customer base leaves you paying for volume you never reach.
  • European interchange caps hold programme revenue well below what US embedded finance case studies suggest, so imported business cases do not transfer.

Pricing, plan by plan

KeystoneJS

Free
  • Open SourceFree
    • Full KeystoneJS
    • Community support

Weavr

On request
  • Weavr embedded finance$undefined/year
    • Platform subscription plus per-account and per-card fees
    • Interchange share negotiated as part of the commercial terms
    • Monthly minimums apply to card programmes

Which should you pick?

Choose KeystoneJS if

  • You need rest api.
  • You want to start without paying.
  • You work on Node.js, Self-hosted.
  • You also want graphql api.
KeystoneJS review

Choose Weavr if

  • You need plug-and-play products.
  • You work on Web, REST API.
  • You also want regulated cover.
Weavr review

Questions people ask

Is KeystoneJS or Weavr better?
Neither clearly leads. KeystoneJS starts at Free and Weavr at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, KeystoneJS or Weavr?
KeystoneJS has a free tier; the other does not. Paid plans start at Free for KeystoneJS and On request for Weavr.
Does KeystoneJS or Weavr run on more platforms?
KeystoneJS runs on Node.js, Self-hosted. Weavr runs on Web, REST API.
Can I use KeystoneJS for free?
Yes. KeystoneJS has a free tier, so you can try it without paying. Weavr starts at On request.
What is KeystoneJS best used for?
KeystoneJS is most often used for headless cms implementation, content management systems, customizable api-driven applications. Of those, headless cms implementation and content management systems are not what Weavr is typically brought in for.
What can KeystoneJS do that Weavr cannot?
KeystoneJS covers REST API, GraphQL API, Admin interface, Node.js. Weavr covers Plug-and-play products, Regulated cover, Card issuing, Multi-currency accounts.

Answered from the vendors’ own pages

KeystoneJS: Is KeystoneJS free?

Yes, KeystoneJS is free and open source with no licensing fees. Core platform has no lock-in and is contributed to by 250+ developers.

Source
Weavr: Do I need my own financial licence?

No. Weavr holds an e-money licence, including a Maltese authorisation for the EU, and acts as the regulated entity for the embedded product.

KeystoneJS: What are hosting costs for KeystoneJS?

KeystoneJS is self-hosted and deployment-agnostic. Hosting costs depend on your chosen deployment platform (Vercel, AWS, Heroku, etc.) and infrastructure, not KeystoneJS itself.

Source
Weavr: How is it different from a banking-as-a-service API?

It sells finished product shapes with compliance built in rather than raw banking primitives, which trades flexibility for a much shorter route to launch.

KeystoneJS: Does KeystoneJS offer paid support?

Enterprise support with tailored options is available from Thinkmill, the company behind KeystoneJS. Pricing details available upon request.

Source
Weavr: How does Weavr make money?

Platform fees plus per-account and per-card charges, with a negotiated share of card interchange.

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