Really excited to see new spreadsheet products pop up. Coda seems like the most broad solution. Most products are centered around a particular use-case like financial planning (https://golayer.io/).

Another interesting approach is to bring Git like diffs and collaboration to spreadsheets. XLTrails for example https://www.xltrail.com/.

I wish someone could figure out how to make Git work well with spreadsheets. It would really unlock so much collaboration and sharing. I think one of the main reasons you can't just find good well maintained templates for simple tools is because of poor collaboration tools around spreadsheets.