Last week we showed in a post how to enable the hidden schema.org feature in TYPO3. The schema.org support of this feature was severely restricted. In this post, we look at three vendor TYPO3-Extensions that support semantic annotation features. If you search for "semantic" or "schema.org" in the TER, you can find two extensions: "px_semantic" and "rte_schema". In addition, my colleague at dkd, Johannes Goslar, developed an "annotation" Extension as a part of his bachelor thesis and the work in the EU project ForgetIT with the topic "Semantics for the TYPO3 CMS". ...