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