Redgate SQL Compare vs Skeema

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Skeema is a declarative, SQL-based schema management utility for applying repository changes to MySQL and MariaDB tables and routines. It generates SQL DDL from schema files and provides diff, lint, push, and pull commands. Configurable linter rules identify unsafe changes, and Skeema verifies generated ALTER TABLE statements in a workspace before proceeding. For online schema changes, it supports database-native alterations and external tools including pt-online-schema-change and gh-ost, with execution configurable by environment and table size. Schema directories can map to multiple servers or schemas, and the utility can detect drift across shards. Listed compatibility includes MySQL 5.5–9.7, MariaDB 10.1–12.3, and Percona Server; AWS Aurora MySQL 5.7–8.4 is listed for Premium. Skeema Cloud Linter can provide automatic diff and lint output for related GitHub commits. All editions can use SSL/TLS, while Premium adds client certificates, CA verification options, and SSH tunnels. The Community plan is free at free. Plus costs $124 a month and Max costs $499 a month.