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Databases · head to head

Apache Druid vs RAD Studio

Apache Druid logo

Apache Druid

Databases

Real-time analytics database for sub-second OLAP queries

From
Free
Free plan
Yes
Visit Apache DruidFull review
RAD Studio logo

RAD Studio

Developer Tools

Cross-platform native app development with Delphi and C++Builder

From
$2000/perpetual
Free plan
No
Visit RAD StudioFull review

The short version

  • Apache Druid is a high performance, real-time analytics database; RAD Studio is a cross-platform IDE.
  • Apache Druid is free; RAD Studio starts at $2000/mo.
  • Where Apache Druid falls short: open-source offering lacks high-availability, distributed architecture, and enterprise security features.
  • Where RAD Studio falls short: professional edition costs $2,000 for the perpetual license plus $599 for year one maintenance, totaling $2,599 before tax.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Apache Druid and RAD Studio actually diverge.

Attributes where Apache Druid and RAD Studio differ
AttributeApache DruidRAD Studio
Starting priceFree$2000/perpetual
Pricing modelOpen-sourceOne-time
Free tierYesNo
PlatformsSelf-hosted, APIWeb
CategoryDatabasesDeveloper Tools

Not yet recorded: founded for RAD Studio.

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 Druid

  • Real-time Ingestion
  • Sub-second Queries
  • Column-oriented Storage
  • Streaming Integration
  • Approximate Algorithms
  • Flexible Schemas
  • Time-based Partitioning
  • Kafka

Only in RAD Studio

Nothing recorded that Apache Druid does not also cover.

What people use each for

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

Apache Druid

  • Real-time analytics platforms ingesting millions of events per second from streaming sourcesnot RAD Studio
  • Applications requiring sub-second queries over high-cardinality datasets (billions to trillions of rows)not RAD Studio
  • Time-series and event analysis at massive scale with columnar storage efficiencynot RAD Studio

RAD Studio

  • Building Windows desktop applications with VCL componentsnot Apache Druid
  • Creating iOS and Android apps from shared Delphi codebasenot Apache Druid
  • Connecting to Oracle databases through FireDAC connectivitynot Apache Druid
  • Building REST web services that run on Linux serversnot Apache Druid

Where each one falls short

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

Apache Druid

  • Open-source offering lacks high-availability, distributed architecture, and enterprise security features
  • Requires native integration with Apache Kafka or Amazon Kinesis for real-time ingestion; custom integrations need development
  • High-concurrency query support (hundreds of thousands QPS) requires significant cluster infrastructure investment

RAD Studio

  • Professional edition costs $2,000 for the perpetual license plus $599 for year one maintenance, totaling $2,599 before tax
  • Enterprise edition steps up to $3,400 license plus $1,199 maintenance, and Architect edition to $4,416 license plus $2,183 maintenance
  • The perpetual license only entitles the buyer to updates for one year; continued access to new updates and upgrades requires an annually renewable Update Subscription

Pricing, plan by plan

Apache Druid

Free

No published plan breakdown. See the Apache Druid review.

RAD Studio

$2000/perpetual
  • Professional Edition$2,000 one-off
    • Perpetual License
    • First year maintenance $599
    • Total $2,599 + Tax
  • Enterprise Edition$3,400 one-off
    • Perpetual License
    • First year maintenance $1,199
    • Total $4,599 + Tax
  • Architect Edition$4,416 one-off
    • Perpetual License
    • First year maintenance $2,183
    • Total $6,599 + Tax

Which should you pick?

Choose Apache Druid if

  • You need real-time ingestion.
  • You want to start without paying.
  • You work on Self-hosted, API.
  • You also want sub-second queries.
Apache Druid review

Choose RAD Studio if

Nothing in the data separates RAD Studio from Apache Druid on the points above - pick on price and on how each one feels to use.

RAD Studio review

Questions people ask

Is Apache Druid or RAD Studio better?
Neither clearly leads. Apache Druid starts at Free and RAD Studio at $2000/perpetual, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Apache Druid or RAD Studio?
Apache Druid has a free tier; the other does not. Paid plans start at Free for Apache Druid and $2000/perpetual for RAD Studio.
Does Apache Druid or RAD Studio run on more platforms?
Apache Druid runs on Self-hosted, API. RAD Studio runs on Web.
Can I use Apache Druid for free?
Yes. Apache Druid has a free tier, so you can try it without paying. RAD Studio starts at $2000/perpetual.
What is Apache Druid best used for?
Apache Druid is most often used for real-time analytics platforms ingesting millions of events per second from streaming sources, applications requiring sub-second queries over high-cardinality datasets (billions to trillions of rows), time-series and event analysis at massive scale with columnar storage efficiency. Of those, real-time analytics platforms ingesting millions of events per second from streaming sources and applications requiring sub-second queries over high-cardinality datasets (billions to trillions of rows) are not what RAD Studio is typically brought in for.
What can Apache Druid do that RAD Studio cannot?
Apache Druid covers Real-time Ingestion, Sub-second Queries, Column-oriented Storage, Streaming Integration.

Answered from the vendors’ own pages

Apache Druid: Is Apache Druid free to use?

Apache Druid is an open-source project with no licensing fees. It is licensed under CC BY-SA 4.0, and the Druid name and logo are trademarks of The Apache Software Foundation.

Source
RAD Studio: How much does RAD Studio cost?

RAD Studio uses perpetual licensing: Professional Edition $2,000 perpetual license + $599 first year maintenance ($2,599 total + tax). Enterprise Edition $3,400 license + $1,199 maintenance ($4,599 total + tax). Architect Edition $4,416 license + $2,183 maintenance ($6,599 total + tax).

Source
Apache Druid: Can I use Apache Druid for commercial purposes?

Yes, Apache Druid is open-source software available for commercial use at no cost. The CC BY-SA 4.0 license permits commercial deployment.

Source
RAD Studio: What is the difference between RAD Studio editions?

Professional Edition ($2,599 total + tax) targets individual developers. Enterprise Edition ($4,599 total + tax) adds multi-tier app capabilities. Architect Edition ($6,599 total + tax) includes advanced database and cloud features. All three include perpetual licenses.

Source
Apache Druid: Where do I find pricing for commercial support or services?

No pricing or support tiers are published on the Apache Druid homepage. For commercial support options, contact the Apache Druid community or consult additional resources beyond the project website.

Source
RAD Studio: Does RAD Studio offer Kai AI integration and discounts?

Yes, adding Kai AI to any edition provides discounts: 25% off Professional ($2,136 + tax), 30% off Enterprise ($3,394 + tax), and 40% off Architect ($4,109 + tax). This promotion is active through August 31, 2026.

Source
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