mysqlreport - Make easy-to-read MySQL status reports.
mysqlsla - Simple, lightweight MySQL log parsing.
mysqlidxchx - Checks tables for unused indexes.
mysqlsniffer - MySQL protocol sniffer.
Maatkit (mk)
Maatkit is a collection of 20+ scripts originally created by BaronSchwartz. These scripts include mk-table-sync, mk-query-digest,mk-archiver, mk-heart, etc.
Others
These scripts are created/maintained by variouspeople/projects。
innotop - A 'top' clone for MySQL.
innodb-tools - Data Recovery Toolkit for InnoDB.
MMM - Monitoring/failover and management of MySQL master-masterreplication configurations
kontrollkit - A collection of scripts to simplify daily MySQL DBAresponsibilities.