Nibbler - Free tool for testing how good your website is, and what you can do to improve it. Check accessibility, SEO, social media, compliance and more.
Pronounce Names - How to correctly pronounce people's names
tota11y - An accessibility visualization toolkit from Khan Academy
Duolingo - Duolingo is a free language learning app for iOS, Windows and Android devices. The app makes learning a new language fun by breaking learning into small lessons where you can earn points and move up through the levels. Read more about Duolingo.
accessiBe - Making websites accessible to people with disabilities
Forvo for iPhone - Learn how to correctly pronounce words in over 335 languages