Topical Relevance V2.0
https://www.topicalrelevance.com https://convert.town/comma-separated-list-to-column
Knowledge Graph Entity Search
https://www.upbuild.io/tools/entity-search/
Service
http://www.productontology.org/doc/Window
Surfer SEO Content Editor
https://www.digitaleer.com/surfer <greedy capitalist affiliate link>
Google NLP API
https://www.textrazor.com/console https://cloud.google.com/natural-language https://www.w3.org/services/html2txt https://www.topicalrelevance.com/
Microdata vs JSON-LD
https://schema.org/Review https://webcode.tools/microdata-generator/review https://www.google.com/webmasters/tools/data-highlighter
Schema Testing Tools
https://webmaster.yandex.com/tools/microtest/ https://www.bing.com/webmaster/diagnostics https://search.google.com/test/rich-results https://search.google.com/structured-data/testing-tool/u/0/