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Mariner Calc

Mariner Calc

Mariner Software
Price: $15 to $25
Availability: mid-July

Mariner lets you read, write, and edit spreadsheets in Excel format. It supports 1 million columns and 32,000 rows. The only problem: how to sync this software with desktop computers. Michael Wray, Mariner's CEO, calls this the million-dollar question and he says he's working with Apple to figure it out.