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Postgres vs Splunk Enterprise Security

Postgres logo

Postgres

Technology

The world's most advanced open source database

From
Free
Rated
-
Splunk Enterprise Security logo

Splunk Enterprise Security

Cybersecurity

The platform for operational intelligence

From
On request
Rated
-

The short version

  • Only Postgres has a free tier, so it costs nothing to try first.
  • Each has a real cost: Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life; Splunk Enterprise Security splunk Enterprise Security is licensed separately from the Splunk platform, so a SIEM deployment needs both
  • They diverge on capability: Postgres covers ACID compliance, Splunk Enterprise Security covers Security monitoring.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Postgres and Splunk Enterprise Security actually diverge.

Attributes where Postgres and Splunk Enterprise Security differ
AttributePostgresSplunk Enterprise Security
Starting priceFreeOn request
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsLinux, Windows, Macos, DockerWeb, Api
CategoryTechnologyCybersecurity
Founded19962003

Identical on both: 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 Postgres

  • ACID compliance
  • Complex queries
  • Foreign keys
  • Triggers
  • Views
  • Stored procedures
  • JSON/JSONB support
  • Full-text search

Only in Splunk Enterprise Security

  • Security monitoring
  • Incident review
  • Risk-based alerting
  • Threat intelligence
  • Investigation workbench
  • MITRE ATT&CK mapping
  • Automated response
  • Compliance reporting

What people use each for

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

Postgres

  • Running a general purpose relational database for applicationsnot Splunk Enterprise Security
  • Self-hosting an open source SQL database with no licence feenot Splunk Enterprise Security
  • Workloads needing extensions, JSON and full text search in one enginenot Splunk Enterprise Security

Splunk Enterprise Security

  • Running a security operations centre on Splunk indexed log datanot Postgres
  • Correlation searches, risk based alerting and incident investigationnot Postgres
  • Compliance reporting from pooled security telemetrynot Postgres

Where each one falls short

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

Postgres

  • Each major version is supported for only 5 years after its initial release, after which it is end-of-life
  • Major version upgrades break on-disk compatibility and require a full dump and reload or the pg_upgrade tool
  • New major versions ship about once a year, so staying supported means a disruptive upgrade cycle
  • Minor releases contain only frequently-encountered bug fixes, low-risk fixes, security issues and data corruption fixes, so feature gaps are not addressed within a major version
  • There is no vendor SLA; commercial support must be bought separately from third party professional services listed by the project

Splunk Enterprise Security

  • Splunk Enterprise Security is licensed separately from the Splunk platform, so a SIEM deployment needs both
  • Splunk publishes no rate for Enterprise Security and directs buyers to contact a pricing expert
  • UEBA, SOAR and automated threat analysis require the Premier edition rather than Essentials
  • The platform underneath can be billed by ingest volume, workload or activity, so the total cost depends on a pricing model chosen at contract time rather than a list price

Pricing, plan by plan

Postgres

Free
  • Community EditionFree
    • Full database features
    • No limitations
    • Community support

Splunk Enterprise Security

On request
  • Workload PricingFree
    • Pay per compute
    • Flexible scaling
    • All features
  • Ingest PricingFree
    • Pay per GB ingested
    • Predictable costs
    • All features
  • Entity PricingFree
    • Pay per monitored entity
    • Security focused
    • All features

Which should you pick?

Choose Postgres if

  • You need acid compliance.
  • You want to start without paying.
  • You work on Linux, Windows, Macos, Docker.
  • You also want complex queries.

Choose Splunk Enterprise Security if

  • You need security monitoring.
  • You work on Web, Api.
  • You also want incident review.

Questions people ask

Is Postgres or Splunk Enterprise Security better?
Neither clearly leads. Postgres starts at Free and Splunk Enterprise Security at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Postgres or Splunk Enterprise Security?
Postgres has a free tier; the other does not. Paid plans start at Free for Postgres and On request for Splunk Enterprise Security.
Does Postgres or Splunk Enterprise Security run on more platforms?
Postgres runs on Linux, Windows, Macos, Docker. Splunk Enterprise Security runs on Web, Api.
Can I use Postgres for free?
Yes. Postgres has a free tier, so you can try it without paying. Splunk Enterprise Security starts at On request.
What is Postgres best used for?
Postgres is most often used for running a general purpose relational database for applications, self-hosting an open source sql database with no licence fee, workloads needing extensions, json and full text search in one engine. Of those, running a general purpose relational database for applications and self-hosting an open source sql database with no licence fee are not what Splunk Enterprise Security is typically brought in for.
What can Postgres do that Splunk Enterprise Security cannot?
Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers. Splunk Enterprise Security covers Security monitoring, Incident review, Risk-based alerting, Threat intelligence.

Answered from the vendors’ own pages

Postgres: How much does PostgreSQL cost to use?

PostgreSQL is completely free to download, install, and use. No licensing fees, subscription costs, or per-seat charges apply. The database is open source under the PostgreSQL License. Source: https://www.postgresql.org

Source
Splunk Enterprise Security: How much does Splunk Enterprise Security cost?

Splunk Enterprise Security pricing is not published. The product is available in Essentials Edition with threat detection, investigation, and response capabilities, and Premier Edition with UEBA, SOAR, and Automated Threat Analysis. Customers must contact Splunk sales for pricing quotes on either edition.

Source
Postgres: Are there commercial PostgreSQL support options available?

Official PostgreSQL (the project) is free. Commercial PostgreSQL services such as hosting, professional support, training, and managed database services are offered by third-party vendors, not the PostgreSQL project itself. Source: https://www.postgresql.org

Source
Splunk Enterprise Security: What editions of Splunk Enterprise Security are available?

Splunk Enterprise Security offers Essentials Edition with threat detection, investigation, and response capabilities, and Premier Edition which adds UEBA (User and Entity Behavior Analytics), SOAR (Security Orchestration, Automation and Response), and Automated Threat Analysis.

Source
Postgres: Do I need a license to use PostgreSQL commercially?

No. PostgreSQL is open source under the PostgreSQL License, which permits free commercial use without royalties, licensing fees, or support obligations. Source: https://www.postgresql.org

Source
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