Fedibird
Social & Communication
A general-purpose Mastodon server in Japan run by admin noellabo, offering many original features. New registrations were suspended at the time of checking.
Japanese UIIndie
Social & Communication: apps for Web browser
9 apps
9 apps that APP NAVI confirmed from official sources to run on Web browser. Last checked: 2026-11-05. Anything we could not confirm stays "Unverified"; we never guess. Prices and specs change, so check each app's official page before you use it.
Social & Communication — see all apps →
Lemmy
Social & Communication
A decentralised discussion platform for communities, as described in its GitHub repository.
Mastodon
Social & Communication
A free and open-source decentralized social media platform, described on its official site as radically different.
Free plan
Matrix
Social & Communication
An open protocol for secure decentralised communications, as its official site describes it, with open-source server implementations.
Misskey
Social & Communication
Free open-source software for building social networking services, with ActivityPub support for Fediverse federation. It has a responsive web UI and PWA support.
Free planAIJapanese UIIndie
Pixelfed
Social & Communication
A free and open-source decentralized photo-sharing social media platform. The official site credits Dansup as the creator.
Stoat
Social & Communication
An open-source group chat app for friends and communities with servers, channels, voice chat and file sharing. The official site states there are no ads or data mining.
TheDesk
Social & Communication
A desktop client for Mastodon (and Misskey) with a multi-column timeline layout. The official site says v25 onward is a modified version of Fedistar.
Japanese UIIndie
Zulip
Social & Communication
An open-source team chat application for distributed teams, described on its official site as organized team chat.