# Firebird

> The true open source database for Windows, Linux, Mac OS X and more

- **Canonical URI:** https://www.vioscale.ai/software/firebird
- **Category:** Relational Databases
- **Homepage:** https://firebirdsql.org
- **Also known as:** firebird
- **Profile claimed by vendor:** no
- **Last updated:** 2026-08-03T12:44:14.379Z

## Vioscale score

**28.4 / 100**, confidence 7% (low).

Composite of weighted, independently-sourced signals (no user reviews, no vendor payment).

| Signal | Score | Weight | Contribution | Evidence present |
|---|--:|--:|--:|:--:|
| capabilities | 28.9 | 17 | 491.4 | ✓ |
| github_stars | 0 | 7 | 0 | - |
| integrations | 27.4 | 8 | 219.5 | ✓ |
| github_activity | 0 | 20 | 0 | - |
| release_cadence | 0 | 12 | 0 | - |
| security_posture | 0 | 18 | 0 | - |
| package_downloads | 0 | 6 | 0 | - |
| stackoverflow_activity | 0 | 20 | 0 | - |

## Pricing

_As of 2026-08-03, [verify at source](https://firebirdsql.org). Independently observed._

Open source · Free tier

> Free and open source, licensed under Mozilla Public License

## About

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._

## Platform & deployment

- **Platforms:** macOS, Linux, Windows
- **Deployment:** On-premise, Self-hosted

## Integrations (8)

_Independently observed._

- Firebird.NET
- JayBird
- Delphi
- FreePascal
- Lazarus
- PHP
- FireRuby
- Sphinx

## Capabilities

_The capabilities that matter for Relational Databases. "-" = undocumented, not absent._

| Capability | Supported |
|---|:--:|
| **Core** | |
| SQL model | Full SQL |
| **Transactions** | |
| ACID transactions | Full |
| Highest isolation level | - |
| **Consistency** | |
| Consistency | Strong |
| **Scale** | |
| Horizontal scale | Single-node |
| **Replication** | |
| Replication | - |
| **Availability** | |
| Automatic failover / HA | - |
| **Deployment** | |
| Deployment | - |
| Serverless / scale-to-zero | ✗ |
| **Compatibility** | |
| Wire compatibility | - |
| **Extensibility** | |
| Extensions / plugins / UDFs | ✓ |
| **Licensing** | |
| Licence class | Copyleft |
| **Data types** | |
| JSON / document support | - |
| Geo / spatial | - |

## Facts

Every value below carries its source and our confidence. Facts are re-crawled on a freshness schedule.

### integrations

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| integrations.count | 8 | [link](https://firebirdsql.org) | 2026-08-03 | 60% (medium) |

### pricing

| Attribute | Value | Source | Retrieved | Confidence |
|---|---|---|---|---|
| pricing.free_tier | yes | [link](https://firebirdsql.org) | 2026-08-03 | 60% (medium) |
| pricing.model | open_source | [link](https://firebirdsql.org) | 2026-08-03 | 60% (medium) |
| pricing.price_level | free | [link](https://firebirdsql.org) | 2026-08-03 | 60% (medium) |
| pricing.transparent | yes | [link](https://firebirdsql.org) | 2026-08-03 | 60% (medium) |

---
*Source: Vioscale (https://www.vioscale.ai/software/firebird). Independent, evidence-based software intelligence. Cite the canonical URI.*