Is Checkmk or Postgres better?

Neither clearly leads. Checkmk starts at Free and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Checkmk or Postgres?

Checkmk starts at Free and Postgres at Free.

Does Checkmk or Postgres run on more platforms?

Checkmk runs on Web. Postgres runs on Linux, Windows, Macos, Docker.

Can I use Checkmk for free?

Both have a free tier, so you can try either at no cost before committing.

What is Checkmk best used for?

Checkmk is most often used for infrastructure monitoring, system observability, enterprise compliance monitoring. Of those, infrastructure monitoring and system observability are not what Postgres is typically brought in for.

What can Checkmk do that Postgres cannot?

Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.

Technology · head to head

Checkmk vs Postgres

Checkmk

Technology

Comprehensive IT monitoring, open and flexible

From: Free
Rated: -

Full review Website

Postgres

Technology

The world's most advanced open source database

From: Free
Rated: -

Full review Website

The short version

Each has a real cost: Checkmk pricing calculated by service count, not hosts (approximately 30 services per host on average); Postgres each major version is supported for only 5 years after its initial release, after which it is end-of-life
Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Checkmk and Postgres actually diverge.

Attributes where Checkmk and Postgres differ
Attribute	Checkmk	Postgres
Pricing model	subscription	open-source
Platforms	Web	Linux, Windows, Macos, Docker
Founded	Unknown	1996

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Technology).

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 Checkmk

Nothing recorded that Postgres does not also cover.

Only in Postgres

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

What people use each for

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

Checkmk

Infrastructure monitoringnot Postgres
System observabilitynot Postgres
Enterprise compliance monitoringnot Postgres

Postgres

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

Where each one falls short

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

Checkmk

Pricing calculated by service count, not hosts (approximately 30 services per host on average)
Professional support limited to 8-10 hours per week on base plans
Synthetic monitoring is separate add-on with per-test pricing

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

Pricing, plan by plan

Checkmk

Free

Community (Self-Hosted)Free
- No cost, forever
- Up to ~100 hosts
- Basic infrastructure monitoring
Pro (Self-Hosted)$190/month
- Advanced analytics
- Reporting
- Distributed monitoring
Ultimate (Self-Hosted)$275/month
- Full-stack observability
- Advanced security compliance
- 10 hours x 5 days professional support (upgradable to 24/7)
CloudAI (SaaS)$240/month
- Fully managed cloud hosting
- 99.5% uptime SLA
- Supports up to 50000 services

Postgres

Free

Community EditionFree
- Full database features
- No limitations
- Community support

Which should you pick?

Choose Checkmk if

You want to start without paying.

Checkmk review

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.

Postgres review

Questions people ask

Is Checkmk or Postgres better?: Neither clearly leads. Checkmk starts at Free and Postgres at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Checkmk or Postgres?: Checkmk starts at Free and Postgres at Free.
Does Checkmk or Postgres run on more platforms?: Checkmk runs on Web. Postgres runs on Linux, Windows, Macos, Docker.
Can I use Checkmk for free?: Both have a free tier, so you can try either at no cost before committing.
What is Checkmk best used for?: Checkmk is most often used for infrastructure monitoring, system observability, enterprise compliance monitoring. Of those, infrastructure monitoring and system observability are not what Postgres is typically brought in for.
What can Checkmk do that Postgres cannot?: Postgres covers ACID compliance, Complex queries, Foreign keys, Triggers.

Answered from the vendors’ own pages

Checkmk: Is there a free version of Checkmk?

Yes, Checkmk Community edition is free forever and supports up to approximately 100 hosts for basic infrastructure monitoring with no cost.

Source

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

Checkmk: How does Checkmk calculate pricing by host count?

Checkmk uses service-based pricing where each monitored aspect (file system, hardware sensor, switch port, metric) counts as one service. On average, there are approximately 30 services per host.

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

Checkmk: What is the difference between Checkmk Pro and Ultimate tiers?

Pro tier at 190 EUR/month includes advanced analytics and 8x5 support, while Ultimate at 275 EUR/month adds full-stack observability, advanced compliance features, and upgradable 24/7 support.

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

Checkmk: Does Checkmk offer a managed SaaS option?

Yes, Checkmk CloudAI is a fully managed SaaS tier at 240 EUR/month with 99.5% uptime SLA and support for up to 50000 services.

Source

Checkmk vs Postgres

Checkmk

Postgres

The short version

Where they differ

What each one covers

Only in Checkmk

Only in Postgres

What people use each for

Checkmk

Postgres

Where each one falls short

Checkmk

Postgres

Pricing, plan by plan

Checkmk

Postgres

Which should you pick?

Choose Checkmk if

Choose Postgres if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Checkmk

More on Postgres

Keep looking

Other head to heads