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Databases · head to head

DuckDB vs Qlik Sense

DuckDB logo

DuckDB

Databases

MIT-licensed analytical SQL database that runs inside your process, with no server, no dependencies and one writer at a time.

From
Free
Rated
-
Full reviewWebsite
Qlik Sense logo

Qlik Sense

Business Intelligence

Self-service data analytics and visualization

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: DuckDB a database file accepts one read-write process at a time; other processes must open it read-only and will not see subsequent writes, so DuckDB cannot be the shared database behind several services.; Qlik Sense expensive pricing structure, particularly for enterprise users and large data volumes
  • They diverge on capability: DuckDB covers In-process execution, Qlik Sense covers Associative Engine.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which DuckDB and Qlik Sense actually diverge.

Attributes where DuckDB and Qlik Sense differ
AttributeDuckDBQlik Sense
Pricing modelopen-sourceUnknown
PlatformsLinux, macOS, Windows, WebAssemblyWeb (Cloud), Desktop (Windows), Mobile (iOS/Android)
CategoryDatabasesBusiness Intelligence
Founded20191993

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 DuckDB

  • In-process execution
  • Vectorised columnar engine
  • Direct file querying
  • Zero dependencies
  • Larger-than-memory queries
  • MIT licence
  • Postgres-flavoured SQL
  • Extension ecosystem

Only in Qlik Sense

  • Associative Engine
  • AI Insights
  • Augmented Analytics
  • Natural Language
  • Alerting
  • SAP
  • Salesforce
  • ServiceNow

What people use each for

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

DuckDB

  • Transformation steps in a data pipeline that would otherwise need Spark, replaced by SQL over Parquet in a single processnot Qlik Sense
  • Analytical queries embedded in an application or a dashboard where shipping a database server alongside it is not acceptablenot Qlik Sense
  • Local exploration of files that are too large for a pandas dataframe but far too small to justify a warehousenot Qlik Sense
  • Continuous integration and testing of analytical SQL, where a real engine can run in the test process without provisioning anythingnot Qlik Sense

Qlik Sense

  • Self-service analyticsnot DuckDB
  • Data explorationnot DuckDB
  • Ad-hoc reportingnot DuckDB
  • Collaborative analysisnot DuckDB
  • Embedded analyticsnot DuckDB

Where each one falls short

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

DuckDB

  • A database file accepts one read-write process at a time; other processes must open it read-only and will not see subsequent writes, so DuckDB cannot be the shared database behind several services.
  • There is no network protocol, authentication or user management, so exposing it to remote clients means writing and securing your own service around it.
  • It is built for scans and aggregations, not for many small transactions, so a workload of high-frequency single-row inserts and updates performs badly compared with SQLite or Postgres.
  • Storage files are backwards compatible but not forwards compatible, so a file written by a newer version cannot be read by an older one and every consumer of a shared file must be upgraded together.
  • Query memory settings matter: some operations still need to hold significant state, so an under-configured memory limit turns a large join or a high-cardinality aggregation into a spill-heavy query or an out-of-memory failure rather than a slow success.

Qlik Sense

  • Expensive pricing structure, particularly for enterprise users and large data volumes
  • Performance degradation when working with very large datasets
  • Limited field capacity and strict 10 GB data limit on Starter plan ($300/month)
  • Weak date handling in set analysis compared to other BI tools
  • Poor API usability, particularly for Python scripts and integration workflows

Pricing, plan by plan

DuckDB

Free

No published plan breakdown. See the DuckDB review.

Qlik Sense

Free
  • Qlik Sense Business (Desktop)Free
    • Personal dashboards
    • No content sharing
    • Desktop only
  • Starter$300/month
    • 10 users
    • 10 GB data for analysis
    • Cloud-based
  • Standard$825/month
    • Unlimited users
    • 25 GB data for analysis
    • Advanced analytics
  • Premium$2750/month
    • Unlimited users
    • 50 GB data for analysis
    • Enhanced support

Which should you pick?

Choose DuckDB if

  • You need in-process execution.
  • You want to start without paying.
  • You work on Linux, macOS, Windows, WebAssembly.
  • You also want vectorised columnar engine.
DuckDB review

Choose Qlik Sense if

  • You need associative engine.
  • You want to start without paying.
  • You work on Web (Cloud), Desktop (Windows), Mobile (iOS/Android).
  • You also want ai insights.
Qlik Sense review

Questions people ask

Is DuckDB or Qlik Sense better?
Neither clearly leads. DuckDB starts at Free and Qlik Sense at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, DuckDB or Qlik Sense?
DuckDB starts at Free and Qlik Sense at Free.
Does DuckDB or Qlik Sense run on more platforms?
DuckDB runs on Linux, macOS, Windows, WebAssembly. Qlik Sense runs on Web (Cloud), Desktop (Windows), Mobile (iOS/Android).
Can I use DuckDB for free?
Both have a free tier, so you can try either at no cost before committing.
What is DuckDB best used for?
DuckDB is most often used for transformation steps in a data pipeline that would otherwise need spark, replaced by sql over parquet in a single process, analytical queries embedded in an application or a dashboard where shipping a database server alongside it is not acceptable, local exploration of files that are too large for a pandas dataframe but far too small to justify a warehouse, continuous integration and testing of analytical sql, where a real engine can run in the test process without provisioning anything. Of those, transformation steps in a data pipeline that would otherwise need spark, replaced by sql over parquet in a single process and analytical queries embedded in an application or a dashboard where shipping a database server alongside it is not acceptable are not what Qlik Sense is typically brought in for.
What can DuckDB do that Qlik Sense cannot?
DuckDB covers In-process execution, Vectorised columnar engine, Direct file querying, Zero dependencies. Qlik Sense covers Associative Engine, AI Insights, Augmented Analytics, Natural Language.

Answered from the vendors’ own pages

DuckDB: Can multiple applications share one DuckDB database?

Not for writing. One process holds the database read-write; others may attach read-only and will not see later writes. Shared multi-writer access needs a different database or a table format with a catalogue.

Qlik Sense: Does Qlik Sense have a free tier?

Qlik Sense Business (Desktop) is permanently free for individual users for creating personal dashboards, though content cannot be shared. Qlik Cloud Analytics offers a 30-day free trial with full features.

Source
DuckDB: Is it a replacement for a data warehouse?

For single-node analytical workloads up to a few hundred gigabytes it very often is. It is not a replacement when many concurrent users need a shared, governed, always-on service.

Qlik Sense: What is the entry price for Qlik Cloud Analytics?

Qlik Cloud Analytics Starter plan starts at $300 per month (annual billing) for 10 users and 10 GB of data. Standard is $825/month for 25 GB with unlimited users. Premium is $2,750/month for 50 GB.

Source
DuckDB: Do I have to load data into it?

No. It queries Parquet, CSV, JSON and Arrow in place, including on object storage. Its own storage format is optional and mainly useful when you want indexes, constraints and faster repeated access.

Qlik Sense: How many users can access Qlik Sense?

The Starter plan is limited to 10 users. Standard, Premium, and Enterprise plans include unlimited users and charge based on data capacity (gigabytes) rather than seat count.

Source
DuckDB: What is MotherDuck's relationship to it?

MotherDuck is a separate company offering a managed and hybrid service built on the DuckDB engine. DuckDB itself remains MIT-licensed and independent of it, with the IP held by the DuckDB Foundation.

Qlik Sense: What is the Associative Engine in Qlik Sense?

The Associative Engine is Qlik's proprietary technology that automatically discovers and explores all possible relationships between data points, enabling intuitive analysis compared to traditional query-based BI tools.

Source
DuckDB: Is it suitable for OLTP?

No. It is designed for analytical scans. For transactional workloads with frequent small writes, SQLite or Postgres is the right tool.

Qlik Sense: Does Qlik Sense support self-service analytics?

Yes, Qlik Sense is designed for self-service business intelligence, allowing business users to create dashboards and explore data without extensive technical knowledge, though complex implementations require expertise.

Source
Qlik Sense: Is Qlik Sense available on-premises?

Yes, Qlik offers both cloud-based (Qlik Cloud Analytics) and on-premises deployment options, though on-premises licensing requires a separate quote.

Source
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