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Alembic vs Doctrine Migrations

Both stand on database migration tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.

Alembic

Free plan Self-hosted

Alembic provides migration scripting for SQLAlchemy projects, including schema comparison and offline SQL generation. Users need to review generated changes and account for the requirements and offline-mode limits.

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Doctrine Migrations

Free plan LinuxSelf-hosted

Choose Doctrine Migrations if you need a free PHP library for versioning schema changes, reviewing generated SQL, and controlling migration execution or rollback. It is a fit for projects using Doctrine DBAL or ORM, with several framework integrations listed. Check the release status before adopting an older version, since 3.8 and earlier are unmaintained.

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The facts

AlembicDoctrine Migrations
Free planYesYes
Open sourceNot publishedNot published
Runs onSelf-hostedLinux, Self-hosted
Lowest paid planFree or on requestFree or on request
Plans published11
MakerNot publishedNot published
Websitealembic.sqlalchemy.orgdoctrine-project.org
On database migration tools#8 of 32#12 of 32

Alembic: what it does well

  • Free and self-hosted
  • Generates candidate migrations from schema metadata
  • Can produce offline SQL scripts
  • Batch operations support SQLite migrations
  • Documents several database dialects

What to know first

  • Rename detection is unreliable in autogeneration
  • Candidate migrations require manual review
  • Offline SQL cannot handle scripts needing database access
  • Requires Python 3.10+ and SQLAlchemy 2.0.0+

Doctrine Migrations: what it does well

  • Free, self-hosted library with an MIT license.
  • Generates migrations by comparing database schemas and ORM mappings.
  • Supports dry runs, execution, and rollback from the console.
  • Can save generated SQL to a file before applying it.
  • Offers transaction controls and non-interactive execution.

What to know first

  • Requires a PHP environment and is available for Linux or self-hosting.
  • Versions 3.8 and earlier are unmaintained.
  • Migration commands warn that schema changes can cause data loss.

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