Alternatives to Excel?

I've been working with spreadsheets that exceds the Excel's capacity. My spdsheets arrive quickly 50 Mb and even would hit 500 Mb if the Excel not stopped.

So, I work with Big Data and BI.

The tools and the formulas of the Excel supply completly my necessities. The real problem is the size of my work. The software don't support to make operations for a big massa of data.

How alternative to Excel, I thought in the following:

Ubuntu + Libre Office (best alternative, but, it isn't the ideal yet)
MySQL (possible alternative, but the imperative paradigm become more complicated than the declarative, matrix intarface is inflexible)
Power BI (little flexibility, complicated formulas)
Access (inflexible, little formulas, little tools)
Pentaho (no comments)

So, how you see my situation? Do you have some sugestion? There are others simple and powerfull alternatives? Or will be that best alternative is buy a super computer?

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When it gets that big

You move to a database. But this can upset some, others will have that glazed eye look.

Not everyone is ready to make the move or not have support but here goes.

When dealing with big data you put it all into the usual SQL (I use MySQL) databases and then think about reports.

So without duplicating the web the system is now 2 steps (easy!)
1. Data goes into the database.
2. Data is reported on with reports.

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Not sure if PowerPivot is still around but I came across them when I worked for a previous employer. It's great with handling huge data sets.

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