Softwr

APIs · head to head

Formance vs kind

Formance logo

Formance

APIs

Open source double-entry ledger and payment orchestration for money-moving software

From
Free
Rated
-
Full reviewWebsite
kind logo

kind

Cloud

Run Kubernetes clusters inside Docker containers

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Formance formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.; kind requires Docker or Podman, so it inherits whatever container runtime limitations exist on the host
  • They diverge on capability: Formance covers Double-entry ledger, kind covers Nodes as containers.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Formance and kind actually diverge.

Attributes where Formance and kind differ
AttributeFormancekind
PlatformsLinux, Docker, Kubernetes, Web, APILinux, macOS, Windows
CategoryAPIsCloud

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 Formance

  • Double-entry ledger
  • Numscript transaction DSL
  • Multi-currency
  • Payments connectivity
  • Reconciliation
  • Self-hosted deployment
  • Cloud offering
  • API and SDKs

Only in kind

  • Nodes as containers
  • Multi-node topologies
  • CI-friendly
  • Local image loading

What people use each for

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

Formance

  • A marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditablenot kind
  • A fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an auditnot kind
  • A payments team that wants one normalised model across several PSPs so reconciliation is not written separately for eachnot kind
  • A company that wants its ledger under a licence it can keep running even if the vendor disappearsnot kind

kind

  • Spinning up and destroying a Kubernetes cluster inside a CI jobnot Formance
  • Testing controllers and operators against several Kubernetes versionsnot Formance
  • Local multi-node clusters without the memory cost of virtual machinesnot Formance

Where each one falls short

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

Formance

  • Formance holds no money and provides no regulatory cover, so it must be paired with a payments provider or bank, and buyers occasionally mistake a ledger for a treasury system and discover the gap late.
  • Numscript is a domain-specific language your team must learn, and while it makes complex splits expressible it also means transaction logic sits outside the languages your engineers already debug well.
  • Self-hosting a ledger that must never lose or duplicate a transaction is a serious operational commitment covering backups, upgrades and Postgres tuning, which is real cost the zero licence fee hides.
  • Enterprise pricing is not published, so the difference between the free path and the supported path cannot be evaluated without a sales conversation.
  • The company is much smaller than the incumbent alternatives, and while the MIT licence protects the code it does not protect the roadmap, so features on the hosted side may arrive slowly or change direction.

kind

  • Requires Docker or Podman, so it inherits whatever container runtime limitations exist on the host
  • Fewer conveniences than minikube: no addon system, so ingress and metrics need manual installation
  • Because nodes are containers sharing the host kernel, it is a weaker simulation of real node behaviour and storage

Pricing, plan by plan

Formance

Free
  • Open SourceFree
    • MIT licensed core ledger
    • Numscript transaction DSL
    • Multi-currency tracking
  • Enterprise$undefined/year
    • Managed or private deployment
    • Payments connectivity and reconciliation
    • Support with response commitments

kind

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

Which should you pick?

Choose Formance if

  • You need double-entry ledger.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Web, API.
  • You also want numscript transaction dsl.
Formance review

Choose kind if

  • You need nodes as containers.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want multi-node topologies.
kind review

Questions people ask

Is Formance or kind better?
Neither clearly leads. Formance starts at Free and kind at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Formance or kind?
Formance starts at Free and kind at Free.
Does Formance or kind run on more platforms?
Formance runs on Linux, Docker, Kubernetes, Web, API. kind runs on Linux, macOS, Windows.
Can I use Formance for free?
Both have a free tier, so you can try either at no cost before committing.
What is Formance best used for?
Formance is most often used for a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable, a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit, a payments team that wants one normalised model across several psps so reconciliation is not written separately for each, a company that wants its ledger under a licence it can keep running even if the vendor disappears. Of those, a marketplace splitting a single customer payment between seller, platform fee and tax that needs the split to be atomic and auditable and a fintech whose homegrown balances table produced numbers finance could not reconcile and now needs proper double-entry before an audit are not what kind is typically brought in for.
What can Formance do that kind cannot?
Formance covers Double-entry ledger, Numscript transaction DSL, Multi-currency, Payments connectivity. kind covers Nodes as containers, Multi-node topologies, CI-friendly, Local image loading.

Answered from the vendors’ own pages

Formance: Is Formance really open source?

Yes. The core ledger is MIT licensed with full source access and no deployment restrictions.

kind: Is kind free?

Yes, open source and maintained under Kubernetes SIGs.

Formance: Does Formance move money?

No. It records and orchestrates movements; the actual payments happen at a PSP or bank you connect.

kind: Why run Kubernetes nodes as containers?

Speed and cost. A container node starts in seconds and uses far less memory than a virtual machine, which is what makes per-CI-run clusters realistic.

Formance: What does the enterprise version cost?

Not published. It is an annual subscription quoted per customer.

kind: Is kind suitable for production?

No. It is a development and testing tool, and node isolation is weaker than real nodes because containers share the host kernel.

Formance: Do I have to use Numscript?

Yes for anything beyond the simplest transfers. It is how multi-party transactions are expressed atomically.

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