This might look like a pixel-for-pixel copy for someone who isn't very familiar with Windows 7, but Jesus, I don’t see anything wrong here. 1. The general look

This might look like a pixel-for-pixel copy for someone who isn't very familiar with Windows 7, but Jesus, I don’t see anything wrong here. 1. The general look and feel is the same. So? That’s just fitting into the platform, having a native look & feel. 2. The general spreadsheet UI wasn’t invested by Microsoft... 3. The icons here are not, in fact, pixel-for-pixel copies... 4. The "ribbon" or tabbed/dynamic interface at the top is also not pixel-for-pixel... 5. The whole UI paradigm is, as you mention, from Xerox/Apple; tabs, icons, buttons, scrollbars, cursors: it's all just another remix... 6. And lastly but most significantly, I think we can excuse an underdog for trying to make software that would be easily usable to people who are most used to the competing suite from an established monopoly vendor!