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Cloud · head to head

K3s vs PocketBase

K3s logo

K3s

Cloud

Lightweight certified Kubernetes distribution in a single binary

From
Free
Rated
-
Full reviewWebsite
PocketBase logo

PocketBase

APIs

Open-source backend with REST API, real-time subscriptions and Admin UI

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: K3s the SQLite default is single-server only; highly available control planes need etcd or an external datastore, which removes much of the simplicity; PocketBase requires technical expertise to deploy and maintain
  • They diverge on capability: K3s covers Single binary, PocketBase covers REST API.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which K3s and PocketBase actually diverge.

Attributes where K3s and PocketBase differ
AttributeK3sPocketBase
Pricing modelOpen source, no licence feeUnknown
PlatformsLinux, ARM, Self-hostedLinux, Windows, macOS, FreeBSD
CategoryCloudAPIs
FoundedUnknown2021

Identical on both: starting price (Free), 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 K3s

  • Single binary
  • SQLite by default
  • Certified conformant
  • Batteries included
  • Low resource footprint
  • Simple install

Only in PocketBase

  • REST API
  • Real-time subscriptions
  • Admin UI
  • SQLite
  • Webhooks
  • File storage
  • Go support
  • Docker support

What people use each for

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

K3s

  • Kubernetes on edge sites and IoT hardware where full clusters will not fitnot PocketBase
  • Development and CI clusters that must start fast and cost nothingnot PocketBase
  • Small production clusters where full Kubernetes is more operations than the workload justifiesnot PocketBase
  • Teaching and learning Kubernetes without cloud spendnot PocketBase

PocketBase

  • Embedded realtime database with REST APInot K3s
  • Backend-as-a-service for single-file deploymentsnot K3s
  • Rapid application development with email/OAuth2 authenticationnot K3s
  • File storage and media attachment managementnot K3s
  • Lightweight alternative to Firebase or traditional backend infrastructurenot K3s
  • Go and JavaScript customisable application frameworknot K3s

Where each one falls short

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

K3s

  • The SQLite default is single-server only; highly available control planes need etcd or an external datastore, which removes much of the simplicity
  • Bundled components such as Traefik are opinionated defaults that larger teams often strip out and replace
  • Removed in-tree cloud provider integrations mean cloud-specific features need external controllers
  • Aimed at small and edge clusters, so very large deployments are better served by a standard distribution

PocketBase

  • Requires technical expertise to deploy and maintain
  • No built-in hosting provided
  • Community support only

Pricing, plan by plan

K3s

Free
  • K3sFree
    • Full functionality
    • No usage limits
    • Community support

PocketBase

Free

No published plan breakdown. See the PocketBase review.

Which should you pick?

Choose K3s if

  • You need single binary.
  • You want to start without paying.
  • You work on Linux, ARM, Self-hosted.
  • You also want sqlite by default.
K3s review

Choose PocketBase if

  • You need rest api.
  • You want to start without paying.
  • You work on Linux, Windows, macOS, FreeBSD.
  • You also want real-time subscriptions.
PocketBase review

Questions people ask

Is K3s or PocketBase better?
Neither clearly leads. K3s starts at Free and PocketBase at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, K3s or PocketBase?
K3s starts at Free and PocketBase at Free.
Does K3s or PocketBase run on more platforms?
K3s runs on Linux, ARM, Self-hosted. PocketBase runs on Linux, Windows, macOS, FreeBSD.
Can I use K3s for free?
Both have a free tier, so you can try either at no cost before committing.
What is K3s best used for?
K3s is most often used for kubernetes on edge sites and iot hardware where full clusters will not fit, development and ci clusters that must start fast and cost nothing, small production clusters where full kubernetes is more operations than the workload justifies, teaching and learning kubernetes without cloud spend. Of those, kubernetes on edge sites and iot hardware where full clusters will not fit and development and ci clusters that must start fast and cost nothing are not what PocketBase is typically brought in for.
What can K3s do that PocketBase cannot?
K3s covers Single binary, SQLite by default, Certified conformant, Batteries included. PocketBase covers REST API, Real-time subscriptions, Admin UI, SQLite.

Answered from the vendors’ own pages

K3s: Is K3s free?

Yes. K3s is open source with no licence fee. SUSE sells commercial support around Rancher separately.

PocketBase: How much does PocketBase cost?

PocketBase is completely free and open-source. It is a self-hosted backend solution with database, authentication, and file storage capabilities at no cost.

Source
K3s: Is K3s real Kubernetes?

Yes. It is CNCF-certified conformant, so standard manifests, kubectl and Helm charts work without modification.

PocketBase: Is PocketBase open-source?

Yes, PocketBase is open-source software. You can download, modify, and deploy it yourself at no cost with no licensing restrictions.

Source
K3s: Why is K3s smaller than Kubernetes?

It strips legacy, alpha and in-tree cloud provider code, packages everything as one binary, and defaults to SQLite instead of etcd.

K3s: Can K3s run in production?

Yes, and it does, particularly at the edge and for small clusters. For a highly available control plane you need to move off the SQLite default to etcd or an external datastore.

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