Open-Source Databases · nullptrlabs

pgmodeler

pgModeler is an open-source visual database modeling tool built specifically for PostgreSQL. It lets you design schemas through a drag-and-drop interface and automatically generates SQL DDL, eliminating manual command typing. The Community Edition is free under GPLv3; a commercial Plus Edition adds reverse engineering and database synchronization.

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Source: GitHub — github.com/nullptrlabs/pgmodeler

3.6k

GitHub stars

423

Forks

C++

Primary language

GPL-3.0

License (OSI-approved)

Key facts

Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.

Field	Value
Repository	nullptrlabs/pgmodeler
Owner	nullptrlabs
Primary language	C++
License	GPL-3.0 — OSI-approved
Stars	3.6k
Forks	423
Open issues	279
Latest release	v1.2.3 (2026-02-06)
Last updated	2026-05-22
Source	https://github.com/nullptrlabs/pgmodeler

What pgmodeler is

C++ and Qt-based cross-platform tool for PostgreSQL schema design and DDL generation. Community Edition handles visual modeling, SQL generation, and validation; supports advanced PostgreSQL objects (views, functions, operators). Known rendering bottlenecks on very large models (100+ tables) and thread-safety issues during large exports.

Quickstart

Get the pgmodeler source

Clone the repository and explore it locally.

terminalbash

1git clone https://github.com/nullptrlabs/pgmodeler.git2cd pgmodeler3# follow the project's README for install & configuration

Need it deployed, integrated, or customized instead? DEV.co ships production installs.

Best use cases

PostgreSQL Schema Design & Documentation

Create visual ERDs and generate production-ready DDL scripts. Ideal for new database design, documentation of existing schemas, and ensuring PostgreSQL compatibility before deployment.

Educational & Development Workflows

Free Community Edition is well-suited for learning database design, prototyping schemas, and small-to-medium team development where reverse engineering is not required.

DBA & Consultant Tools (with Plus)

Reverse engineering, diff/sync, and integrated database management capabilities make Plus Edition valuable for DBAs managing multiple instances and consultants supporting clients.

Implementation considerations

Community Edition licensing (GPLv3) requires any modifications or redistribution to maintain GPL compliance; proprietary extensions are not permitted without separate licensing.
Thread-safety issues documented for large exports/validations; test critical workflows on target hardware before production adoption.
Reverse engineering, diff, and database synchronization features are Plus-only; Community users must manage schema changes manually or via external tools.
Plugin ecosystem exists (pgmodeler/plugins repo) for extending capabilities; evaluate plugin maturity and maintenance status for custom requirements.
Pre-built binaries available on official site; source compilation is feasible on Linux/macOS but requires GCC/Clang toolchain.

When to avoid it — and what to weigh

Multi-Database Support Required — pgModeler is PostgreSQL-first and specialized. If you need modeling for MySQL, SQL Server, Oracle, or polyglot database environments, generic tools (e.g., Lucidchart, DbSchema) are better suited.
Very Large Models (100+ Tables) — Qt raster rendering can cause slowdowns and responsiveness issues on complex, large-scale models. Performance becomes a concern on typical hardware.
Windows-Only Development — Source code relies on GCC/Clang-specific extensions; compiling from source on Windows requires MinGW or WSL. Pre-built binaries are available, but native MSVC support is not available.
Need for Real-Time Collaboration — No built-in support for concurrent team editing or cloud-based collaboration. Model files are local; multi-user workflows require external version control practices.

License & commercial use

pgModeler Community Edition is distributed under GNU General Public License v3 (GPLv3). GPLv3 is a copyleft license requiring that any derivative works, modifications, or distributed versions remain under GPLv3 and source code remain available. The tool itself and associated trademarks are owned by Nullptr Labs.

GPLv3 permits commercial use of the unmodified Community Edition for internal projects. However, if you modify the source code or redistribute it, derivative work must remain under GPLv3 with source code publicly available. For commercial workflows requiring proprietary extensions, bundling, or redistributing modified versions, pgModeler Plus commercial license or explicit written permission from Nullptr Labs is required. Consult legal counsel for complex scenarios.

DEV.co evaluation signals

Editorial assessment — not user reviews. Directional, with an explicit confidence level.

Signal	Assessment
Maintenance	Active
Documentation	Adequate
License clarity	Clear
Deployment complexity	Low
DEV.co fit	Good
Assessment confidence	High

Security considerations

No security audit results, vulnerability disclosure policy, or formal security certifications are documented in the provided data. As a local desktop application handling database schema definitions, it does not expose network services by default. When Plus Edition connects to live PostgreSQL instances, standard database authentication and network security practices apply. Users should verify the integrity of pre-built binaries from the official source and review any custom plugins from community repositories before use.

Alternatives to consider

DbSchema

Commercial multi-database modeling tool with reverse engineering, diff/sync, and collaborative features. Supports PostgreSQL and 30+ other databases. Steeper cost but broader database compatibility.

Lucidchart / Miro

Cloud-based diagramming and collaboration tools with database templates. Easier team collaboration and real-time editing; less specialized for DDL generation and PostgreSQL features.

Navicat / DBeaver (Visual Design Mode)

General-purpose database admin tools with visual schema editing. DBeaver is free and open-source (Eclipse Public License); Navicat is commercial. Less specialized for modeling workflows but provide integrated admin features.

Software development agency

Build on pgmodeler with DEV.co software developers

Assess whether pgModeler Community Edition aligns with your schema design and team requirements. For reverse engineering, diff/sync, or production-scale DBA workflows, explore Plus Edition licensing. Contact our team to discuss integration with your database infrastructure and CI/CD pipelines.

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pgmodeler FAQ

Can I use pgModeler Community Edition commercially?

Yes, for internal use of the unmodified software. If you modify the code or redistribute it, you must release derivatives under GPLv3 with source code public. Consult legal counsel if bundling, reselling, or creating proprietary extensions.

Does Community Edition support reverse engineering (reading existing databases)?

No. Reverse engineering is a Plus Edition exclusive feature. Community Edition is for forward design only: create models and generate DDL.

What are the known performance limitations?

Qt raster rendering can cause slowdowns on large models (100+ tables). Thread-safety issues may occur during large exports or validations. Test on your target hardware before critical workflows.

Is there a server version or cloud deployment?

Unknown from provided data. pgModeler is a desktop application. No server or SaaS variant is documented; deployment is local to the user's machine.

Custom software development services

Adopting pgmodeler is usually one piece of a larger software development effort. As a software development agency, DEV.co provides software development services and web development expertise — pairing senior software developers and web developers with your team to design, build, and operate open-source databases software in production.

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