Easy Dialog package helps you easily create basic or custom dialogs.
Flutter simple dialog example.
Two Flutter widgets that wrap a TextFormField and integrates the date and/or time picker dialogs.
RFlutter Alert is super customizable and easy-to-use alert/popup dialogs for Flutter. You may create reusable alert styles or add buttons as much as you want with ease.
Flutter date range pickers use a dialog window to select a range of date on mobile.