TableField | Drupal.org
This module allows you to attach tabular data to a node in Drupal 6 or any entity in Drupal 7. The input form allows the user to specify the number of rows/columns and allows entry into each table cell using text fields. Tables can be defined globally or on a per-node/per-entity basis, so every node can have multiple tables of arbitrary size. Enter data by hand or by CSV upload. Table data can also be downloaded as CSV files by your users if you so choose. Tables are multi-value and revision capable.