Start with the job you need to finish, not the longest feature list. A SQL editor, a query analyzer, and a monitoring service solve different parts of the problem.
Write SQL and inspect one query. Choose MySQL Workbench for SQL editing and Visual Explain. It helps you inspect an execution plan; reviewing a plan is not the same as finding which queries cost your production workload the most.
Find the queries worth optimizing first. Choose pt-query-digest when you already have a MySQL slow-query log. Its report groups similar queries and ranks their recorded execution cost. It analyzes the captured workload; it does not rewrite your SQL or create indexes.
Investigate recurring production slowdowns. Choose ongoing monitoring when you need metrics and query history from the time an incident happened. PMM provides dashboards and query analytics; Releem combines monitoring with configuration and query optimization recommendations. Compare data collection requirements, retention, and who will review and apply the recommendations.
Review server configuration. Choose MySQLTuner for a point-in-time assessment, or Releem for workload-based configuration recommendations over time. Configuration tuning and SQL/index tuning are different jobs; one does not replace the other.
Before committing, check support for your database version and hosting setup, required permissions, and the data the tool collects. For ongoing visibility with an actionable next step,
see how Releem MySQL monitoring works.