This module allows users to export nodes and then import it into another Drupal installation, or on the same site.
Using this module you can save yourself a lot of time setting up new websites that have similar nodes to websites you've already made, migrating nodes to new Drupal versions, or between development/staging/production sites.
You will need the same content types for the imports to work (unless using Feeds to import), and ideally relevant compatibility with fields, and modules.
This module adds a CCK table field type that lets you add a table display to any content type without having to manually enter HTML. It currently parses text data to form the header and row content. The output is generated by the theme system, so you don't have to worry about formatting valid HTML or adding all those little classes yourself.
A related module is Tablefield. It is a more advance version of this module.