The grid in Heidi is a good part but could use a little more love ;)
Here are my suggestions:
- allow removal of column from grid
- allow searching for a column in a grid
- show which columns are keys (perhaps an icon in column header would be nice)
- allow drag and drop of field header to editor
- allow exporting to xlsx (with basic formatting, such as header colored, column widths adjusted to content etc)
- add grid toolbar (customizable) so that we can put most commonly used features there
- add line numbers to grid; clicking on that number should select whole row (for easy copy-pasting)