In case there are a few of you out there who think Microsoft has the only spreadsheet available on the market, should learn about
Corel Office's
version called Quattro Pro. Not to mention they are having
an incredible sale this week for Black Friday.
As you can see, Quattro Pro has all the same features as Excel, and allows you to work with Excel files as well as the Quattro Pro file format. Also, it is now version 15 (X5) and so has been around longer than Excel has.
I recommend you give it a try.
Save $100 on
Corel WordPerfect Office Now Only $149. & Free Shipping. Ends Nov. 30th.
Need help learning about spreadsheets? You can learn more by visiting my
free spreadsheet tutorial site.
There is also a
Home and Student version 
with less functionality but more than suited for your needs.
