Redgate SQL Compare Alternatives for Linux and macOS

Redgate SQL Compare is a Windows-first tool, so teams on macOS and Linux need something else to diff and sync SQL Server schemas. DbSchema is the closest like-for-like on all three operating systems: it reverse-engineers the live database, compares it against a saved model file and generates the DDL, with schema synchronization in the Pro edition. Aqua Data Studio covers broader administration, and Flyway or Liquibase cover headless CI/CD migrations.

How to do schema compare?

Database schema comparison is the engineering process of introspecting two database structures, identifying discrepancies between their metadata definitions, and generating accurate Data Definition Language (DDL) migration scripts. The comparison engine connects to a source environment, extracts tables, views, foreign keys, indexes, triggers, and stored procedures, and compares them line by line against a target environment.

Schema synchronization bridges the gap between offline design model files and live database deployments. In team development environments, developers frequently modify local schemas or design files under version control. A dedicated schema comparison tool allows database administrators to inspect differences before applying DDL updates, ensuring that test, staging, and production environments remain aligned.

Visual schema diffs prevent production breaking changes by highlighting destructive operations before execution. Dropping columns, modifying data types, or altering primary keys can cause catastrophic data loss or lock production tables. A visual comparison tool displays side-by-side object differences, identifies missing dependencies, and generates ordered SQL migration scripts that apply safe changes while flagging dangerous statements.

1. Connect to the source and target database instances or load offline schema model files.
2. Introspect database metadata across schemas, tables, constraints, indexes, and routines.
3. Review object-level differences in a side-by-side visual diff interface.
4. Select specific schema modifications to include or exclude from the deployment.
5. Generate and validate the resulting SQL migration script before executing it against the target database.

What is the best SQL Server schema compare tool?

The best SQL Server schema comparison tool depends on the operating system of your workstation. On Microsoft Windows, Redgate SQL Compare has long served as an industry standard for database administrators, and its tight integration with SQL Server Management Studio (SSMS) makes it highly effective for Windows-centric teams.

For database administrators running macOS and Linux, the best tool changes. Redgate SQL Compare provides its visual user interface exclusively on Windows, leaving Unix-based DBAs unable to run the desktop application natively. While Redgate offers a Linux command-line interface for automated deployments, interactive schema inspection and visual diffing require a native cross-platform database design tool or a multi-platform database IDE.

When selecting an alternative on macOS or Linux, evaluate whether your team requires visual schema modeling and interactive object selection or headless command-line execution within continuous deployment pipelines.

Is SQL Compare free?

Redgate SQL Compare is commercial proprietary software and is not free. Redgate offers a 14-day fully functional trial, after which users must purchase an ongoing annual license. Red Gate lists a one-year subscription at $327 per user for one to four users, with larger bundles priced separately.[1]

Recurring annual subscription costs have led many database administrators to seek cost-effective alternatives with flexible licensing models. While command-line tools like Liquibase and Flyway offer open-source core tiers for script execution, teams needing visual schema design often prefer tools that provide perpetual licenses with optional renewal.

• Commercial annual subscriptions (such as Redgate SQL Compare, priced per user per year as listed above) require recurring budget approvals for every developer seat.
• Perpetual desktop licenses allow teams to pay once and maintain ownership of their visual database design software indefinitely.
• Open-source CLI migration utilities provide free script execution in pipelines but lack graphical schema modeling and interactive diff viewers.

How to compare schemas in SQL Server?

Comparing schemas in SQL Server from macOS and Linux requires connecting through standard JDBC drivers. Database tools use the official Microsoft JDBC Driver for SQL Server or open-source jTDS drivers to query system catalog views (such as sys.tables, sys.columns, sys.foreign_keys, and sys.indexes) and reconstruct complete database metadata.

Some developers attempt to run Windows-only tools like dbForge Studio on macOS and Linux using Windows compatibility layers such as CrossOver 22 or Wine. While compatibility layers can launch Windows binaries, they frequently introduce graphical rendering lag, high memory consumption, and complex JDBC-to-ODBC bridge configuration issues.

Native cross-platform applications deliver a more reliable experience. Tools built on cross-platform architectures connect directly over TCP/IP to SQL Server instances hosted on-premises, in Docker containers, or in cloud environments like Azure SQL and Amazon RDS. For example, Aqua Data Studio provides native multi-platform database administration on an annual per-user subscription; AquaFold lists Standard annual licensing at $499 per user and Enterprise Ultimate at $699 per user.[2]

• Configure network access to SQL Server TCP port 1433 and enable SQL Server authentication or Azure Active Directory.
• Load the Microsoft JDBC Driver for SQL Server into the comparison client.
• Specify the source and target database connection strings or select an offline schema model file.
• Run the metadata introspection engine to capture object definitions across schemas.
• Inspect generated SQL alter statements before applying changes to the live database instance.

What is the alternative to Liquibase?

Redgate Flyway is the primary command-line alternative to Liquibase for automated database change management in CI/CD pipelines. Both tools automate database migrations by executing version-controlled scripts against target environments, but they follow fundamentally different design philosophies.

Liquibase uses declarative ChangeLogs written in XML, YAML, JSON, or SQL, and works with over 60 databases, including relational, NoSQL, and graph engines[3]. In contrast, Flyway emphasizes simplicity by relying on plain, numbered SQL migration scripts (such as V1initial_schema.sql and V2add_index.sql) that database administrators write and maintain in native SQL dialects.

Pure CLI migration tools do not provide interactive visual schema comparison. DbSchema pairs effectively with both Flyway and Liquibase: database administrators use it to inspect schema differences, resolve them against the model, and export cleanly formatted DDL migration scripts into their Flyway or Liquibase source control repositories.

What is the alternative to Lucidchart?

Lucidchart is a general-purpose cloud diagramming application, but it is not a database engineering tool. While Lucidchart allows users to draw entity-relationship diagrams manually or import basic SQL DDL text files, it cannot establish a live network connection to SQL Server, introspect running databases, or compare schema differences between environments.

Database administrators managing evolving schemas require a functional engineering platform rather than a static drawing canvas. DbSchema reverse-engineers live schemas directly from SQL Server, PostgreSQL, MySQL, and NoSQL databases, generating interactive ER diagrams with automated relationship routing.

• Live schema reverse engineering: Introspects live database catalogs over JDBC instead of relying on manual vector drawing.
• Offline model file management: Saves complete database structures into local XML design files that teams version in Git.
• Bi-directional schema synchronization: Compares offline design models against live databases and generates exact DDL migration scripts.
• Interactive documentation: Exports searchable HTML5 data dictionaries with embedded vector diagrams and mouse-over field comments.

The shortlist and why each is on it

Database administrators managing SQL Server and mixed database environments on macOS and Linux have several proven alternatives to Redgate SQL Compare. Each tool fills a distinct role across visual modeling, broad IDE administration, and pipeline automation.

• DbSchema: Leads in visual ER diagramming, offline schema modeling, and interactive schema synchronization across SQL Server and many other engines. It is weaker for teams seeking pure headless code-first CLI automation without a desktop GUI.
• Aqua Data Studio: Provides a comprehensive database administration IDE with built-in visual schema comparison across a broad set of relational, cloud, and NoSQL platforms, sold as a per-user annual subscription listed at $499 per user for a Standard licence, so the cost recurs every year.[2]
• Redgate Flyway: Serves as the industry-standard command-line tool for executing versioned SQL migration scripts in CI/CD pipelines across all platforms, though it lacks visual schema design capabilities.

To inspect your SQL Server schema differences visually on macOS, Linux, or Windows, open a DbSchema project model against your live database instance. The Pro edition includes schema synchronization, interactive HTML5 documentation, and visual query building under both perpetual and monthly licenses.

Frequently asked questions

Is SQL Compare free?

No. Redgate SQL Compare is a commercial tool sold as a per-user annual subscription: Red Gate lists a one-year subscription at $327 per user for one to four users. There is no free community edition, though a trial is available.

Does Redgate SQL Compare run natively on macOS?

The visual GUI for SQL Compare is designed for Windows. To run Redgate schema comparisons natively on Linux or macOS, you must use their Command Line Interface or integrate via Docker.

What is the best alternative to Liquibase?

Redgate Flyway is the primary alternative to Liquibase for database version control. While Liquibase uses XML, YAML, or JSON ChangeLogs and supports over 60 databases, Flyway uses numbered plain SQL files to track and deploy database changes.

What is the alternative to Lucidchart?

A visual database design tool is the technical alternative to Lucidchart. Instead of manually drawing abstract shapes, it connects directly to your live database, reverse-engineers the true schema, and lets you manage synchronization and offline design.

Can I compare SQL Server schemas on a Mac?

Yes. You can use cross-platform Java-based desktop tools such as Aqua Data Studio, whose Standard annual licence AquaFold lists at $499 per user, or run Windows-centric tools like dbForge Schema Compare through a Windows compatibility layer such as CrossOver or Wine.

Download DbSchema and run the compare on your own SQL Server instance: it reverse-engineers the live schema on Windows, macOS or Linux, and the Pro edition adds the schema synchronization and saved model file this article describes.

Sources

1. Redgate SQL Compare pricing
2. Aqua Data Studio editions and pricing
3. docs.liquibase.com