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
Convert your data online, free
Free in-browser converters for CSV, Excel, JSON, XML and SQL: Withdata Online Data Conversion. Large files, batch conversion or scheduling? See the offline desktop apps, or browse all data conversion tools.