This is a TYPO3 CMS extensions with addons and default configuration used by supseven. This is not a standalone SEO tool, but only a minor extension to EXT:seo of TYPO3 itself.
Add via composer: composer require supseven/seo-addons
Include the provided Typoscript file:
@import 'EXT:seo_addons/Configuration/TypoScript/setup.typoscript'
and adjust, like a common EXT:seo configuration.
GPL v3.0