Language learning
Rikai
A platform for learning English and Japanese through structured language knowledge and personal study collections. It combines spaced-repetition reviews, connected vocabulary, and tools for finding and maintaining learning material.
Key features
- Personal study collections with item search, ordering, spaced-repetition reviews, learning stages, and due-review counts.
- A lexical knowledge graph covering word forms, senses, definitions, usage examples, and semantic relations.
- Knowledge search and editing, publication controls, and links to source materials.