General Modules
| Name | Machine Name | URL | Composer | Notes |
| Admin Toolbar | admin_toolbar | https://www.drupal.org/project/admin_toolbar | drupal/admin_toolbar | Essential. |
| Focal Point | focal_point | https://www.drupal.org/project/focal_point | drupal/focal_point | Essential for mobile responsive. |
| Pathauto | pathauto | https://www.drupal.org/project/pathauto | drupal/pathauto | Essential+, careful configuration required. |
| Redirect | redirect | https://www.drupal.org/project/redirect | drupal/redirect | Essential+ (Reduces broken links on active sites). |
| Menu Block | menu_block | https://www.drupal.org/project/menu_block | drupal/menu_block | |
| Turnstile | turnstile | https://www.drupal.org/project/turnstile | drupal/turnstile | Integrates Captcha with Cloudflare Turnstile |
| hCaptcha | hcaptcha | https://www.drupalorg/project/hcaptcha | drupal/hcaptcha | Integrates Captcha with hCaptcha service |
| Slick Views | slick_views | https://www.drupal.org/project/slick_views | drupal/slick_views | Retrieves slick as dependency, preferred carousel/slider. |
| Image Effects | image_effects | https://www.drupal.org/project/image_effects | drupal/image_effects | Useful GD functions for manipulating images for render. |
| Draggable Views | draggableviews | https://www.drupal.org/project/draggableviews | drupal/drupal/draggableviews | |
| Views Bootstrap | views_bootstrap | https://www.drupal.org/project/views_bootstrap | drupal/views_bootstrap | Essential if using Bootstrap-based theme. Use the version listed for your version of Bootstrap. |
| Webform | webform | https://www.drupal.org/project/webform | drupal/webform | Essential for forms, install libraries and make sure private file system is set. |
| Remove HTTP headers | remove_http_headers | https://www.drupal.org/project/remove_http_headers | drupal/remove_http_headers | Removed HTTP headers which may hint at CMS. Users can find out anyway, but this throws off unsophisticated users. |
| Security Kit | seckit | https://www.drupal.org/project/seckit | drupal/seckit | Allows more fine-grained header and security control. |
| XML Sitemap | xmlsitemap | https://www.drupal.org/project/xmlsitemap | drupal/xmlsitemap | Useful for SEO. Generates an XML sitemap of your site for submission to search engines. |
Payments
I no longer recommend taking payments directly on a Drupal site for most use cases. It's faster and more secure to link to a Stripe or Authorize.net form. This helps mitigate fraudulent card tasting activities.
Other
| Name | Machine Name | URL | Composer | Notes |
| Entity Clone | entity_clone | https://www.drupal.org/project/entity_clone | drupal/entity_clone | Enables clone functionality for many entity types. Allows you to quickly duplicate Drupal content. |
| Entity Print | entity_print | https://www.drupal.org/project/entity_print | drupal/entity_print | |
| CSV Importer | csv_importer | https://www.drupal.org/project/csv_importer | drupal/csv_importer | |
| Views Bulk Edit | views_bulk_edit | https://www.drupal.org/project/views_bulk_edit | drupal/view_bulk_edit | Extends views_bulk_operations |
| Views Entity Form Field | views_entity_form_field | https://www.drupal.org/project/views_entity_form_field | drupal/views_entity_form_field | Provides editable form fields usable in views, facilitates quick complex bulk edit forms. |