The Arena Project

A family learning companion that turns daily effort into growth

One brutal puzzle a day. Sharpen your brain in minutes.

A startup handbook for ordinary people.

A digital Buddhist canon that starts from the scriptures to understand the Dharma — nearly 20,000 volumes of sutras with plain-language explanations and keyword hints, without altering the original text.

An AI agent-powered scientific research assistance platform developed with the philosophy of 'letting knowledge emerge naturally'.

Use sentence-level clues to review AI writing signals in text and documents