entity_browser: Doesn't do much without configuration. media_entity_browser is basically a configured version of this for browsing images, videos, etc. Might be better to do manually as it can integrate with inline_entity_formcontact_storage: Aims to bring Drupal's core contact form module towards D7's webform and entityform modulesrestui: Useful when using the REST API to exposed endpoints, but can be done in views instead.webform: Look to replace with core's contact_form when it has features like multi-page support, email / handlers (user selectable, ideal for CRM), etc.inline_entity_form: For creating and editing entities on the same page.