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Comparison chart with key features:
| Evaluation Worth Using? | Plugin | Math Formulas | Inline Editing | Works in Mobile | Filtering | Comment |
|---|---|---|---|---|---|---|
| To Test | CelesteCS Math |  |
| Looks promising... | ||||
| No | Bob Swift Advanced Tables |
| | |
| April 2015 - Like the most but requires math functionality. | ||||
| No | Excellentable | | |  |
| April 2015 - Nice search function but ugly. | ||||
| No | Spreadsheets for Confluence | | | |
| April 2015 - lack of InLine Editing made it not good enough. | |
| To Test | Table Filter and Charts |
|
So far all these are pretty limiting.
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Yes this generally works but sharing spreadsheets for editing requires sharing in Google and has some limitations (forget now), but not for Corporate Websites.
Encryption
Securing Specific Content on a Page
Redaction - looks very promising.
Looks promising, no public key, but simple enough - https://marketplace.atlassian.com/plugins/com.prcpo.confluence.plugins.secure-content-block
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