data import wizard
this tool lets you import data in common standard objects; up to 50000 records
data loader
client app that can import records of any data type from files, database, you can schedule regular data loads
data export service
allows to export data manually once every week 7 days or 29 days
data loader
client app which needs to be installed separately, operated by user interface or command line, useful to automate the process
dataloader.io
tool which allows to bulk import/export data in few simple steps, used to insert, update, delete, export or upset records for standard and custom objects