- http://www.sidar.org/traducciones/wcag20/es/
- https://www.w3.org/WAI/translations/#espaol-spanish
- http://www.sidar.org/traducciones/wcag20/es/
- https://linktr.ee/lengua_franca
- http://www.lecturafacil.net
- https://www.institutolecturafacil.org
- https://www.tawdis.net/index?lang=es
- https://www.deque.com/axe/ - Axe Core includes support
- https://developers.google.com/web/tools/lighthouse/
- https://www.mqd.es/accesibilidad-audiovisual/subtitulado-en-directo/
- https://medya-audiovisual.com/subtitulado-de-videos-empresa-audiovisual/
- https://www.esteno.cl/servicios/eventos-y-reuniones-en-vivo/
- https://langsolinc.com/testing-for-spanish-readability/
- https://langsolinc.com/understanding-flesch-kincaid-readability-scores/
- https://readable.com/blog/creating-readability-formulas-for-non-english-languages-the-problem-of-the-syllable/
- https://emmresourcecenter.org/resources/tips-using-plain-language-spanish
- https://hurraki.org/espanol/wiki/P%c3%a1gina_principal
- https://datayze.com/readability-analyzer - for Fry Graph and assortment of others
- https://readabilityformulas.com/free-fry-graph-test.php - for Fry Graph