Comparison

Firebird vs PostgreSQL

On the evidence we track, PostgreSQL leads this comparison with a composite score of 60/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Firebird full profile →PostgreSQL full profile →

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Firebird28

★PostgreSQL60

Attribute comparison across 2 tools
Attribute	Firebird	PostgreSQLLeader
Vioscale score	28 / 100low · 10%	60 / 100medium · 56%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	open_source	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	8	10
Security
Disclosure policysecurity.disclosure_policy	-	✓
Scorecardsecurity.scorecard	-	6.1
Vulnerabilitiessecurity.vulnerabilities	-	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=openstack-helm%2Fpostgresql&per_page=100 · Last 12m: 0
Adoption
Dependent reposadoption.dependent_repos	-	0
Github starsadoption.github_stars	-	21,899
Stackoverflow questionsadoption.stackoverflow_questions	-	170,000
Activity
Commits last 30dactivity.commits_last_30d	-	100
Release
Cadence daysrelease.cadence_days	-	90
License
Spdxlicense.spdx	-	PostgreSQL
Language
Primarylanguage.primary	-	C
Market
Availabilitymarket.availability	Available worldwide	Available worldwide
Content
Faqcontent.faq	-	8 items

Score

Vioscale score

Firebird28 / 100low · 10%

PostgreSQL60 / 100medium · 56%

Pricing

Free tier

Firebird✓

PostgreSQL✓

Model

Firebirdopen_source

PostgreSQLcommercial

Price level

Firebirdfree

PostgreSQLfree

Transparent

Firebird✓

PostgreSQL–

Integrations

Count

Firebird8

PostgreSQL10

Security

Disclosure policy

Firebird–

PostgreSQL✓

Scorecard

Firebird–

PostgreSQL6.1

Vulnerabilities

Firebird–

PostgreSQLCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=helm&package_name=openstack-helm%2Fpostgresql&per_page=100 · Last 12m: 0

Adoption

Dependent repos

Firebird–

PostgreSQL0

Github stars

Firebird–

PostgreSQL21,899

Stackoverflow questions

Firebird–

PostgreSQL170,000

Activity

Commits last 30d

Firebird–

PostgreSQL100

Release

Cadence days

Firebird–

PostgreSQL90

License

Spdx

Firebird–

PostgreSQLPostgreSQL

Language

Primary

Firebird–

PostgreSQLC

Market

Availability

FirebirdAvailable worldwide

PostgreSQLAvailable worldwide

Content

Faq

Firebird–

PostgreSQL8 items

Capabilities

Feature-by-feature on the axes that matter for relational databases. “-” means undocumented, not absent.

Capability comparison for Relational Databases
Capability	Firebird	PostgreSQL
Core
SQL model	Full SQL	Full SQL
Transactions
ACID transactions	-	-
Highest isolation level	-	-
Consistency
Consistency	-	-
Scale
Horizontal scale	-	Read replicas
Replication
Replication	-	-
Availability
Automatic failover / HA	-	✓
Deployment
Deployment	-	Self-hosted
Serverless / scale-to-zero	-	✗
Compatibility
Wire compatibility	-	-
Extensibility
Extensions / plugins / UDFs	✓	✓
Licensing
Licence class	Permissive OSS	Permissive OSS
Data types
JSON / document support	-	✓
Geo / spatial	-	Extension

Core

SQL model

FirebirdFull SQL

PostgreSQLFull SQL

Transactions

ACID transactions

Firebird-

PostgreSQL-

Highest isolation level

Firebird-

PostgreSQL-

Consistency

Firebird-

PostgreSQL-

Scale

Horizontal scale

Firebird-

PostgreSQLRead replicas

Replication

Firebird-

PostgreSQL-

Availability

Automatic failover / HA

Firebird-

PostgreSQL✓

Deployment

Firebird-

PostgreSQLSelf-hosted

Serverless / scale-to-zero

Firebird-

PostgreSQL✗

Compatibility

Wire compatibility

Firebird-

PostgreSQL-

Extensibility

Extensions / plugins / UDFs

Firebird✓

PostgreSQL✓

Licensing

Licence class

FirebirdPermissive OSS

PostgreSQLPermissive OSS

Data types

JSON / document support

Firebird-

PostgreSQL✓

Geo / spatial

Firebird-

PostgreSQLExtension

What each one is

The product in its own terms, so the numbers below have context.

Firebird

An open source relational database management system that scales from embedded, single-user deployments to enterprise applications with hundreds of simultaneous clients and databases up to 20 terabytes.

Independently observed

PostgreSQL

Leader

PostgreSQL is a mature open-source relational database system combining strong data integrity with comprehensive features and active community maintenance.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Firebird

Open sourceFree tier

Free open source database. Optional commercial support services from €199/month/server (enterprise subscriptions) or one-time incident services (€575–€2500).

as of 2026-08-13verify ↗

PostgreSQL

Leader

Open sourceFree tier

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Firebird	PostgreSQL
macOSPlatforms	✓	✗
WindowsPlatforms	✓	✓
LinuxPlatforms	✓	✓
CLIPlatforms	✓	✓
Cloud / SaaSDeployment	✗	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✓	✗

Platforms

macOS

Firebird✓

PostgreSQL✗

Windows

Firebird✓

PostgreSQL✓

Linux

Firebird✓

PostgreSQL✓

CLI

Firebird✓

PostgreSQL✓

Deployment

Cloud / SaaS

Firebird✗

PostgreSQL✓

Self-hosted

Firebird✓

PostgreSQL✓

On-premise

Firebird✓

PostgreSQL✗

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Firebird

8 total

Firebird.NET
JayBird
Delphi
FreePascal
Lazarus
PHP
FireRuby
Sphinx

Independently observed

PostgreSQL

Leader

10 total

CloudNativePG
Kubernetes
Patroni
pgAdmin
pgVector
PostGIS
pgAudit
Spock
Cilium
Submariner

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.