Withdata Software provide some ETL (Extract-Transform-Load) tools for MySQL:
TxtToMy Load TXT, CSV, TSV data to MySQL
XmlToMysql Transform XML data to MySQL
JsonToMysql Transform JSON data to MySQL
XlsToMy Extract data from Excel to MySQL
AccessToMysql Extract Access data to MySQL
DB2ToMysql Extract DB2 data to MySQL
MsSqlToMysql Extract SQL Server data to MySQL
OracleToMysql Extract Oracle data to MySQL
PostgresToMysql Extract PostgreSQL data to MySQL
SqliteToMysql Extract SQLite data to MySQL
MysqlCopier Extract data from one MySQL database to another