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Databases · head to head

Apache Pulsar vs Budibase

Apache Pulsar logo

Apache Pulsar

Databases

Cloud-native messaging and streaming with separated storage

From
Free
Rated
-
Full reviewWebsite
Budibase logo

Budibase

Spreadsheets

Build business apps in minutes

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Apache Pulsar more components than Kafka: brokers, BookKeeper and ZooKeeper each need operating; Budibase cloud plans are metered on automation actions, from 5,000 a month on Pro to 250,000 on Business
  • They diverge on capability: Apache Pulsar covers Separated storage, Budibase covers Drag-and-drop builder.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Apache Pulsar and Budibase actually diverge.

Attributes where Apache Pulsar and Budibase differ
AttributeApache PulsarBudibase
Pricing modelOpen source, no licence feeopen-source
PlatformsLinux, Docker, Kubernetes, Self-hostedWeb, Self-hosted
CategoryDatabasesSpreadsheets
FoundedUnknown2019

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 Apache Pulsar

  • Separated storage
  • Queuing and streaming
  • Built-in multi-tenancy
  • Geo-replication

Only in Budibase

  • Drag-and-drop builder
  • Database design
  • REST API
  • User management
  • Custom code
  • Workflows
  • Responsive design
  • 100+ integrations

What people use each for

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

Apache Pulsar

  • Platforms needing both work queues and replayable streams without running two systemsnot Budibase
  • Multi-tenant messaging where isolation between teams is a requirementnot Budibase
  • Deployments where storage and traffic grow at genuinely different ratesnot Budibase

Budibase

  • Building internal tools over existing databasesnot Apache Pulsar
  • Self-hosting an open source low-code platformnot Apache Pulsar
  • Admin panels and CRUD apps for operations teamsnot Apache Pulsar
  • Automations triggered by data changesnot Apache Pulsar

Where each one falls short

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

Apache Pulsar

  • More components than Kafka: brokers, BookKeeper and ZooKeeper each need operating
  • Correspondingly harder to run well, and the expertise is rarer than Kafka expertise
  • A much smaller ecosystem of connectors, tooling and hiring pool than Kafka
  • The architectural advantages only pay off at a scale most deployments never reach

Budibase

  • Cloud plans are metered on automation actions, from 5,000 a month on Pro to 250,000 on Business
  • Creator seats are limited and cost $50 each beyond the included count
  • End users are $5 per user per month on top of the plan
  • Custom branding needs Premium, SSO enforcement and environment variables need Business, and audit logs are Enterprise only
  • Log retention is tiered from 1 day on Pro to 365 days on Enterprise
  • Monthly billing costs 20 percent more than annual

Pricing, plan by plan

Apache Pulsar

Free
  • Apache PulsarFree
    • Full functionality
    • No usage limits
    • Community support

Budibase

Free
  • Open SourceFree
    • Self-hosted
    • Community support
  • FreeFree
    • Cloud hosted
    • Limited features
  • Premium$50/month
    • Advanced features
    • Email support

Which should you pick?

Choose Apache Pulsar if

  • You need separated storage.
  • You want to start without paying.
  • You work on Linux, Docker, Kubernetes, Self-hosted.
  • You also want queuing and streaming.
Apache Pulsar review

Choose Budibase if

  • You need drag-and-drop builder.
  • You want to start without paying.
  • You work on Web, Self-hosted.
  • You also want database design.
Budibase review

Questions people ask

Is Apache Pulsar or Budibase better?
Neither clearly leads. Apache Pulsar starts at Free and Budibase at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apache Pulsar or Budibase?
Apache Pulsar starts at Free and Budibase at Free.
Does Apache Pulsar or Budibase run on more platforms?
Apache Pulsar runs on Linux, Docker, Kubernetes, Self-hosted. Budibase runs on Web, Self-hosted.
Can I use Apache Pulsar for free?
Both have a free tier, so you can try either at no cost before committing.
What is Apache Pulsar best used for?
Apache Pulsar is most often used for platforms needing both work queues and replayable streams without running two systems, multi-tenant messaging where isolation between teams is a requirement, deployments where storage and traffic grow at genuinely different rates. Of those, platforms needing both work queues and replayable streams without running two systems and multi-tenant messaging where isolation between teams is a requirement are not what Budibase is typically brought in for.
What can Apache Pulsar do that Budibase cannot?
Apache Pulsar covers Separated storage, Queuing and streaming, Built-in multi-tenancy, Geo-replication. Budibase covers Drag-and-drop builder, Database design, REST API, User management.

Answered from the vendors’ own pages

Apache Pulsar: Is Apache Pulsar free?

Yes, open source under the Apache Software Foundation.

Budibase: What happens if I exceed the monthly action limit on my plan?

Actions are hard monthly limits. Once you reach the limit on your plan (5K for Pro, 20K for Premium, 250K for Business), you must upgrade to a higher tier to continue using the service.

Source
Apache Pulsar: Pulsar or Kafka?

Pulsar separates storage from compute and covers queuing and streaming in one system. Kafka has a far larger ecosystem and hiring pool. Most teams should have a specific reason before choosing Pulsar.

Budibase: Is there a charge for additional users beyond what is included in my plan?

Yes. Each plan includes a limited number of creators (1 for Pro, expandable for Premium, 3 for Business), but end users are charged at $5 per user per month as an add-on.

Source
Apache Pulsar: Why does separated storage matter?

Brokers hold no data, so adding or replacing one requires no rebalancing, and storage can grow without adding serving capacity.

Budibase: How much extra do I pay if I choose monthly billing instead of yearly?

Monthly billing costs 20% more than the yearly equivalent. For example, paying monthly for Pro at $19/month equals $228 per year, versus $190 per year on a yearly subscription.

Source
Budibase: Can I try Budibase before committing to a paid plan?

Yes. All paid cloud plans include a 14-day free trial. The open source version is also available free with unlimited actions and unlimited users, though with community support only.

Source
Budibase: Does the free open source plan include the same features as paid plans?

The open source plan includes unlimited actions, unlimited apps, automations, agents, and users, but support is community-only rather than through Budibase directly. Paid plans add features like AI credits, custom branding, backups, and email or priority support.

Source
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