The official Japan travel information site.
Japan is in East Asia. This page collects 17 websites and apps that are actually used there, grouped into 6 categories. Every entry links to the official site and carries a short description, so you can tell at a glance what each platform is for before you click through.
The most populated categories are Online Shopping, News & Media, Search Engines, Video Platforms. Browsing by category is usually faster than scanning the whole list: if you are looking for a local marketplace, a ride-hailing app or a news portal, the category page for Japan narrows the list down immediately.
Among the better-known entries are 日本国立国会图书馆, Yahoo! JAPAN, Google Japan, LINE, Niconico. Also listed: ABEMA, Rakuten Ichiba, Amazon Japan. These are mainstream services rather than niche ones, which makes them a reasonable starting point if you are trying to understand how the internet in Japan is organised.
Rankings on this site are computed from on-site clicks combined with human verification, not third-party traffic data. That means the ordering reflects interest from visitors to this directory rather than an estimate of a platform's total audience. Treat it as a starting point for exploration, and use the official links for anything that matters.