erwin Data Modeler Alternatives, Free and Paid

erwin Data Modeler is the enterprise tool for conceptual, logical and physical database models that started at Logic Works, passed through CA, and has belonged to Quest Software since early 2021. It is still developed. Quest's feature tour for release 15.2 lists conceptual modeling, Neo4j edge mapping, a REST API report and AI-powered DDL script validation. Targets on the product page run from Oracle, SQL Server and PostgreSQL to Snowflake, Databricks, BigQuery, MongoDB and Neo4J.

The download is where many people get stuck. Quest's download page lists erwin Data Modeler 15.1 (64-bit) from October 2, 2025 and erwin Data Modeler for macOS 15.1 from October 20, 2025, and says a newer version exists. Those files are only for "customers under current support maintenance contract". Anyone else fills in a trial registration form, and Quest does not publish the trial length. There is no public price.

The eight alternatives below have either a price you can read or a free tier. ER/Studio comes first because it reads erwin model files directly. Readers leaving Oracle's free modeler or SAP PowerDesigner will find more options in our sister lists.

Prices below are as of November 6, 2026. Our method is on How we review tools.

Quick comparison

ER/Studio Data Architect

ER/Studio and erwin have competed for the same data architecture teams for decades. Both do logical and physical models, naming standards, a shared model repository and reverse engineering from live databases. What matters for a migration is the MetaWizard. Its bridge list imports erwin 3.x ERX files, erwin 4.x, 7.x and 8.x models, and erwin 9.x to 12.x files or single models pulled from an erwin mart.

Prices are public. The ER/Studio pricing page lists Data Architect at $2,687 per user and Data Architect Pro at $3,693 per user, both as total subscription prices, with Enterprise quoted by sales and a free trial on offer.

Best for: Data architecture teams that want to move existing erwin models with the least rework.

Pricing:

• Data Architect: $2,687 per user, total subscription price
• Data Architect Pro: $3,693 per user
• Enterprise: contact sales; free trial offered

Watch out for:

• The erwin bridges stop at version 12.x. Models saved in erwin 15 may need exporting to an older format or to XML first.
• Idera does not publish how long the subscription term runs.

Official site: ER/Studio Data Architect. Our listing: ER/Studio Data Architect.

SqlDBM

Many erwin seats now model Snowflake or Databricks rather than an on-premises Oracle box. SqlDBM was built for that. It runs in the browser, so there is no installer and no maintenance contract standing between you and the software. It targets Snowflake, Databricks, Redshift, BigQuery, Oracle, PostgreSQL, SQL Server, AlloyDB and MySQL.

Models connect to GitHub, GitLab, Bitbucket or Azure DevOps and can produce dbt YAML, which suits analytics engineers more than erwin's mart repository does. The SqlDBM pricing page describes one plan with every feature, priced per user by quote, with AI Copilot credits billed on top.

Best for: Analytics engineering teams modeling cloud warehouses alongside dbt and Git.

Pricing:

• No public price; one plan with all features, quoted per user
• AI Copilot credits billed separately

Watch out for:

• Reviewers on G2 say deployment and CI/CD steps often need custom scripts, and one notes conceptual modeling is missing.

Official site: SqlDBM. Our listing: SqlDBM.

Oracle SQL Developer Data Modeler

Oracle gives this modeler away. It covers logical, relational, physical, multidimensional and data type models, and the product page lists an import from CA ERwin 7.3, so older erwin files have a free way out.

Version 24.3.1 downloads for 64-bit Windows with JDK 17 bundled, and for macOS (ARM64 and x64) and Linux RPM with JDK 17 or later installed separately. It ships under the Oracle Free Use License. Our Oracle SQL Developer Data Modeler alternatives list covers what to use when Oracle is not your main database.

Best for: Oracle database teams that need erwin-class modeling at no licence cost.

Pricing:

• Free under the Oracle Free Use License
• Oracle Support applies only with an Oracle Database licence

Watch out for:

• Support for MySQL, TimesTen, Sybase and SQL Server is still listed under future plans with no commitment, and version control means Subversion, not Git.

Official site: Oracle SQL Developer Data Modeler. Our listing: Oracle SQL Developer Data Modeler.

DbSchema

DbSchema suits teams who mostly reverse-engineer existing databases, document them and push changes back. It connects over JDBC to relational and NoSQL databases, keeps models in Git, and generates HTML documentation in the Pro edition. It runs on Windows, macOS and Linux.

The DbSchema purchase page sells perpetual licences: Pro at $294 one-time and Architect at $470.40, with updates at $75 or $120 a year from year two. A free Community edition and a 15-day trial of the paid features are available, and an AI Assistant add-on costs $9 a month.

Best for: Small teams that want a one-time licence and models stored in Git.

Pricing:

• Community: free
• Pro: $294 one-time; updates $75 a year after year one
• Architect: $470.40 one-time; updates $120 a year
• AI Assistant: $9 a month; 15-day trial

Watch out for:

• Community cannot save designs to a file or work offline, per the purchase page, so it is a viewer more than a modeler.
• Bring models across by reverse-engineering the database or loading DDL. The DbSchema migration guide for PowerDesigner uses the same DDL route, and diagrams and notes do not survive it.

Official site: DbSchema. Our listing: DbSchema.

Navicat Data Modeler

Navicat Data Modeler 5 handles conceptual, logical and physical models in Crow's Foot, IDEF1X or UML notation. IDEF1X matters here, because it is the notation many erwin shops standardised on. Targets include MySQL, PostgreSQL, MongoDB, MariaDB, SQL Server, Oracle, SQLite and Snowflake, on Windows, macOS 14 or later and Linux.

The Enterprise perpetual licence shows as USD 1,299 on the Navicat plan page, listed as a reseller price. A free Lite edition allows up to 5 users per organisation.

Best for: Desktop modelers who want IDEF1X notation and a perpetual licence.

Pricing:

• Lite: free, up to 5 users per organisation
• Enterprise perpetual: USD 1,299, shown as a reseller price
• Subscription price: not published

Watch out for:

• Lite drops reverse and forward engineering, SQL export, model conversion and sync, per the feature matrix.

Official site: Navicat Data Modeler. Our listing: Navicat Data Modeler.

Hackolade Studio

erwin added MongoDB, Cassandra and Neo4J support over time, but its core is still relational. Hackolade started from the other end. It models document, graph, key-value and columnar stores plus JSON Schema and API formats, with 36 target entries in its editions list, and runs on Windows, Mac and Linux.

The Hackolade pricing page lists Workgroup at EUR 175 per dedicated seat per month or EUR 1,750 per seat per year, with Git built in and a 14-day trial that needs no card. Floating seats go through sales.

Best for: Teams whose models are mostly NoSQL, JSON or API schemas.

Pricing:

• Community: free in the browser, 50 objects per model
• Workgroup: EUR 175 per seat per month or EUR 1,750 per seat per year
• Floating seats: contact sales
• Personal and Professional: prices not published

Watch out for:

• Community has no forward or reverse engineering, per the editions page, so real work needs a paid seat.

Official site: Hackolade Studio.

Luna Modeler

Datensen's Luna Modeler costs less than a year of most enterprise seats. Version 14.7 designs for PostgreSQL, Supabase, Neon, Oracle, SQL Server, Azure SQL, MySQL, MariaDB and SQLite, works offline, and runs on Windows, macOS and Linux as an AppImage.

The Datensen purchase page sells Basic at $99, Professional at $189 and Ultimate at $349 one-time. Each licence covers one user on unlimited devices with the first year of updates. Professional adds database compare and ALTER scripts; Ultimate adds a folder-based team format and a command line.

Best for: Freelancers and small teams on PostgreSQL or SQL Server who want a cheap perpetual licence.

Pricing:

• Basic: $99 one-time
• Professional: $189 one-time
• Ultimate: $349 one-time
• One user, unlimited devices; first year of updates included

Watch out for:

• Updates after year one need a renewal, and the purchase page lists no renewal price.

Official site: Luna Modeler.

dbdiagram.io

Not every erwin seat needs to be replaced with another heavy modeler. Developers who only read diagrams can type tables in DBML, an Apache-2.0 schema language, and dbdiagram.io draws the diagram. SQL import, export and reverse engineering are on every plan.

The dbdiagram pricing page lists a free plan with up to 10 diagrams and one editor, Personal Pro from $8 a month, and Team at $75 a month for 3 editors plus $5 per extra editor. Annual billing saves up to 42%.

Best for: Developers who need quick, shareable diagrams rather than governed models.

Pricing:

• Free: up to 10 diagrams, one editor
• Personal Pro: from $8 a month (annual billing saves up to 42%)
• Team: $75 a month with 3 editors; extra editors $5 a month

Watch out for:

• It has no logical or conceptual layer. DBML maps straight to physical tables, so it cannot replace erwin for a data governance team.

Official site: dbdiagram.io.

How to choose

When to stay with Erwin Data Modeler

Keep erwin if you run a Workgroup mart with years of shared models, naming standards and reports built on it. ER/Studio's bridges pull models out of an erwin mart one at a time, so a large mart is a project to move. erwin also links to Quest's erwin Data Intelligence for catalogue and lineage work. Teams moving off SAP's tool should read our PowerDesigner alternatives before choosing, since erwin is one of the main landing spots there.

Frequently asked questions