Compare tables within or across databases
Ripple, a server that can serve as a middleman in MySQL replication
This tool helps manage asynchronous replication between PXC or MariaDB clusters. The typical use case would be to manager a master-master replication link between two distincts PXC clusters but the tools supports more complex topology.
The main features of percona/replication-manager are: Replication and Migration.
Open-source alternatives to percona/replication-manager include: codership/galera — Synchronous multi-master replication library. datafold/data-diff — Compare tables within or across databases. flike/kingbus — A distributed MySQL binlog storage system built on Raft. google/mysql-ripple — Ripple, a server that can serve as a middleman in MySQL replication. openark/orchestrator — MySQL replication topology management and HA. pingcap/tiflow — This repo maintains DM (a data migration platform) and TiCDC (change data capture for TiDB).