Firebird vs PostgreSQL
Firebird: Lightweight, MVCC relational database from the InterBase lineage, embeddable or client-server. PostgreSQL: The extensible, standards-first open-source relational database.
key differences
- Licensing: Firebird is open source (copyleft) (InterBase Public License / Initial Developer's Public License (MPL-style)); PostgreSQL is open source (permissive) (PostgreSQL License).
- PostgreSQL is built for larger datasets (≤ 10 TB) than Firebird (≤ 100 GB).
- Horizontal scaling is none in Firebird and addon in PostgreSQL.
- Only Firebird has encryption at rest.
- Only PostgreSQL has full-text search, vector search, geospatial, json, change data capture.
- Firebird can run embedded in your application process.
choose firebird for
- +Desktop and Delphi business applications
- +Embedded databases in point-of-sale or ERP software
- +Departmental client-server systems
- +Migration target for InterBase deployments
best at · OLTP, Embedded
choose postgresql for
- +General-purpose application backend
- +SaaS multi-tenant data
- +Geospatial applications with PostGIS
- +Semantic search alongside relational data with pgvector
best at · OLTP, Geo, Search
Firebird vs PostgreSQL: FAQ
What is the difference between Firebird and PostgreSQL?
Firebird: Lightweight, MVCC relational database from the InterBase lineage, embeddable or client-server. PostgreSQL: The extensible, standards-first open-source relational database. Licensing: Firebird is open source (copyleft) (InterBase Public License / Initial Developer's Public License (MPL-style)); PostgreSQL is open source (permissive) (PostgreSQL License). PostgreSQL is built for larger datasets (≤ 10 TB) than Firebird (≤ 100 GB). Horizontal scaling is none in Firebird and addon in PostgreSQL.
When should I choose Firebird over PostgreSQL?
Choose Firebird for desktop and Delphi business applications; embedded databases in point-of-sale or ERP software; and departmental client-server systems. Choose PostgreSQL for general-purpose application backend, SaaS multi-tenant data and geospatial applications with PostGIS.
Is Firebird or PostgreSQL more popular?
PostgreSQL ranks #1 on the WhichDB Score (93.2/100) and Firebird ranks #68 (32.8/100). Popularity is not fit: check the requirements that matter for your project.
Are Firebird and PostgreSQL open source?
Yes. Firebird is open source. License: InterBase Public License / Initial Developer's Public License (MPL-style). Yes. PostgreSQL is open source. License: PostgreSQL License.