Have a look at open office.
No, have a look at Libre Office.
Open Office is dead, and Libre Office is the spiritual continuation of the project.
What happened to Open Office?
Google it.
Short version is developers didn't agree with the rights restrictions imposed so they left. First build of libra was the oo code (which hadn't been updated in ages) with bits fixed but it's being constantly improved in the way oo hasn't in years.
The spreadsheet app in open office has pretty much everything Excel does. Might be a bit strange at first if you have used Excel a lot but once you get used to where things are and the slightly different syntax then it's every bit as powerful (plus you get to tell M$ to foxtrot oscar![]()