Firebird
The true open source database for Windows, Linux, Mac OS X and more
- Also known as
- firebird
What is 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.
Firebird pricing
We don't have Firebird's full plan breakdown yet (its pricing page resisted automated reading). Here's what we could confirm. Always check live pricing for exact numbers.
Free and open source, licensed under Mozilla Public License
What Firebird does
The capabilities that matter for relational databases, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- SQL model
- Full SQL
- ACID transactions
- Full
- Highest isolation level
- -
- Consistency
- Strong
- Horizontal scale
- Single-node
- Replication
- -
- Automatic failover / HA
- -
- Deployment
- -
- Serverless / scale-to-zero
- ✗
- Wire compatibility
- -
- Extensions / plugins / UDFs
- ✓
- Licence class
- Copyleft
- JSON / document support
- -
- Geo / spatial
- -
Platform & deployment
Independently observed- macOS
- Linux
- Windows
- On-premise
- Self-hosted
Integrations (8)
Independently observed- Firebird.NET
- JayBird
- Delphi
- FreePascal
- Lazarus
- PHP
- FireRuby
- Sphinx
Firebird alternatives
Other relational databases we track, ranked by the same independent score.
The Vioscale score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Firebird, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Capabilities | 29 | 17.00 | 491.4 | ✓ |
| Integrations | 27 | 8.00 | 219.5 | ✓ |
| Github Stars | 0 | 7.00 | 0.0 | - |
| Github Activity | 0 | 20.00 | 0.0 | - |
| Release Cadence | 0 | 12.00 | 0.0 | - |
| Security Posture | 0 | 18.00 | 0.0 | - |
| Package Downloads | 0 | 6.00 | 0.0 | - |
| Stackoverflow Activity | 0 | 20.00 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | {"sql_model":"full_sql","serverless":false,"consistency":"strong","extensibility":true,"license_class":"copyleft","horizontal_scale":"single_node","acid_transactions":"full"} | mediumsource · 2026-08-03 · 60% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 8 | mediumsource · 2026-08-03 · 60% |