Withdata Software provide some ETL (Extract-Transform-Load) tools for MySQL:
FileToDB Load TXT, CSV, TSV, XML, JSON, Excel, SQL, RDF, INI data to MySQL
DBToFile Export MySQL data to TXT, CSV, TSV, XML, JSON, Excel, SQL files
DBCopier Copy data between MySQL and other rational databases
MongoToDB Ease your MongoDB to MySQL converting work
DBBlobEditor Edit / Import / Export BLOB data in MySQL