There are several effective SEO extensions available for Joomla. We often recommend using extensions like SH404SEF, RSSEO!, and JoomSEF for their robust features. These extensions offer functionalities such as optimizing meta titles, descriptions, and URLs, generating XML sitemaps, managing redirects, optimizing social metadata, and providing insights to enhance site SEO. Additionally, integrating Google Analytics and Google Search Console with Joomla is crucial for monitoring website performance and identifying optimization opportunities.