Atlas vs Sqitch

Atlas is a language-independent tool for managing database schemas and migrations through declarative, versioned workflows. It compares a database's current state with a desired schema expressed in HCL, SQL, or an ORM format, then can generate and execute a migration plan. Teams can lint and validate migrations, run safety checks, and test schemas and migrations. The open version supports PostgreSQL, MySQL, MariaDB, SQLite, TiDB, and LibSQL; Pro adds drivers including SQL Server, Oracle, Snowflake, and Databricks. Atlas describes its core engine as open source under Apache 2.0, with advanced features in proprietary versions. Integrations include Kubernetes, Terraform, GitHub Actions, GitLab CI, CircleCI, Bitbucket Pipelines, Azure DevOps, and a Go SDK. Starter is free. Atlas Pro costs $9 per developer per month, plus usage-based pricing for CI/CD pipelines and databases; new users can try Pro for 30 days. Schema Monitoring costs $39 per monitored database per month. Enterprise pricing is custom.

Sqitch is a database change management application for deploying and tracking database changes. It is a standalone system, not tied to a framework, ORM, database engine, or development environment. Changes are written as scripts native to the chosen database, and can declare dependencies—including changes in other Sqitch projects—to establish execution order. A plan file and Merkle tree pattern support deployment integrity without requiring numbered change names. Sqitch can deploy and revert changes, report status and history, and run optional verification scripts. Its manual lists PostgreSQL, YugabyteDB, CockroachDB, SQLite, MySQL, MariaDB, Oracle, Firebird, Vertica, Exasol, Snowflake, and ClickHouse. Connecting and executing scripts requires the database's native command-line client and connector libraries. Installation options include source, Docker, Linux distribution packages, macOS Homebrew, and Windows instructions. Sqitch is free, with a license permitting use and distribution, and is available for Linux, macOS, Windows, and self-hosted use.