This is a heavily interactive web application, and JavaScript is required. Simple HTML interfaces are possible, but that is not what this is.
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Wordshark Online
wordsharkonline.bsky.social
did:plc:fv3tsyffozgyoka2jryv57ba
Wordshark offers learning games for reading and spelling. It's used in Primary and Secondary schools and by tutors and is sold almost entirely by word of mouth.