Try R and RStudio. It excels at 'poking around' data. In addition, you can show any data frame as a spreadsheet of data, import/export CSV files, etc... Knit

Try R and RStudio. It excels at 'poking around' data. In addition, you can show any data frame as a spreadsheet of data, import/export CSV files, etc... Knitr, Shiny, Plotly and other technologies also make producing documents, graphs and whatnot super easy. This Stencila also looks cool though. Spreadsheet + R....