What are the data migration tools? and their limitations?

Data Migration tools:-

1.Data Import Wizard:-It is used for  import data for many standard Salesforce objects, including accounts, contacts, leads, solutions and custom objects. You can import up to 50,000 records at a time.

2.Data Loader:-Data Loader is used for the bulk import or export of data.We can insert, update,
delete, export,export all Salesforce records.
When importing and exporting data, it shows the results in CSV files.

You can use data loader for up to 5 million records.