"A worksheet, in the style of MS Excel, that can be exported to CSV format."
Excell is a practical and simple worksheet, in the style of MS Excel, which is also totally free.
As with any worksheet, you can store the data in different rows and columns, and do calculations and basic operations among the different cell content. The interesting feature of Excell is that the stored information can be exported to CSV format. That means you can later export it to other applications.
On the other hand, Excell also lets you count the total number of rows and columns active at any time. You can also make searches within the cell content.