Sharely.ai for Drupal replaces your site's search with one that understands meaning, and adds an Ask mode that answers questions from your own pages with citations.
Search API Luxir connects your Drupal site to Luxir, a fast open-source search engine, so your site search can return more relevant results, filters and facets than Drupal's built-
CCBot Drupal Connector links a Drupal site to CCBot App. With a subscription API key, the site exports content, sends update webhooks, and can show a floating assistant.
