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Welcome to Hollo

A federated microblogging software for single-users. ActivityPub-enabled, Mastodon-compatible API, supports CommonMark and FEP-044f-compliant quotes.

For single-users

Hollo is designed for single-users, so you can own your instance and have full control over your data. It’s perfect for personal microblogs, notes, and journals.

Multiple accounts

Although Hollo is designed for single-users, you can have multiple accounts on the same instance. You can switch between accounts easily, and each account has its own profile, posts, and settings.

Mastodon-compatible API

Hollo is headless; instead, it complies with the Mastodon API, so that you can use any Mastodon-compatible client to interact with it.

CommonMark

You can compose your posts in CommonMark (so-called Markdown), and Hollo will render them for you—of course, other fediverse software will render them as well. Moreover, you’re allowed up to 10,000 characters per post.

Quote posts

Hollo supports FEP-044f-compliant quotes, so you can quote other posts in your own posts. It’s compatible with both Misskey-style and Mastodon-style quote implementations, including Mastodon, Misskey, Akkoma, Fedibird, and Threads.

Misskey-style emoji reactions

Hollo supports Misskey-style emoji reactions, so you can react to posts with Unicode emojis and custom emojis. It’s compatible with other fediverse software that supports Misskey-style emoji reactions, e.g., Misskey, Akkoma.

Powered by Fedify

Hollo is powered by Fedify, an ActivityPub server framework for TypeScript.