| Features and Content Types |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Social Media |
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| Microblogging (Short Posts - typically 500 characters or less) |
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| Macroblogging (Long Posts) |
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| Rich Text (bold, italics, quotes, code blocks, embedded content, etc.) |
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| Threaded Conversations (Forum-style / Facebook-style) |
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| Direct Messages (DMs) |
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| Repeats / Boosts / Reposts (send someone's post to your followers) |
repeat |
boost |
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repost |
| Shares / Quote Posts (create a new post quoting another post) |
share |
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quote post |
quote post |
| Scheduled Posts |
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| Bookmark Posts |
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| Addons / Applications (Apps) (additional features that users can activate) |
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| Blog (Articles) |
app |
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| Wiki (Personal or Shared Wikis) |
app |
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| Web Pages (HTML, BBCode, Markdown) |
app |
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| Image Gallery |
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| Files (Cloud Storage) |
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| Events / Calendar |
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| Polls |
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| Lists (create lists of channels to follow) |
privacy groups |
lists |
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lists |
| Follow RSS Feeds |
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| Import RSS Feeds and Publish on a Channel |
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| Channel Types |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Public Channels |
public |
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| Private Channels (friends & connections only) |
personal |
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| Community Forums / Discussion Groups |
forum |
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| Custom Channels with Unique Permissions |
custom |
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| Access Control / Post Permissions |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Public Posts |
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| Posts Visible Only to Friends / Connections |
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| Posts Visible Only to Specific People |
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| Posts Visible Only to Specific Privacy Groups |
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| Control Membership in Forums / Discussion Groups |
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| Control Access to Content (Articles, Wiki, Web Pages, etc.) |
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| Disable Comments / Prevent Replies to Your Posts |
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| Block Channels / Actors |
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| Social Identity |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Cross-Platform Social Identity (recognized on multiple servers) |
channel |
account |
profile |
account |
| Multiple Identities under the Same Login Account |
channels |
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profiles |
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| Clone Identity on Multiple Servers (at same time) |
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| Sync Identity between Cloned Channels |
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| Migrate Identity to Another Server |
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| Download Backup of Identity (Export / Import) |
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| Federated Single Sign On (log into other servers with your identity) |
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| Content Backups, Cloning, and Migration |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Sync Posts between Cloned Channels |
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| Migrate Content to Another Server |
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| Download Backup of Content (Export / Import) |
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| Export Content |
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| Networks and Protocols |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Nomad Network / Zot Protocol |
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| Magic Sign On / OpenWebAuth (OWA) |
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| ActivityPub |
optional |
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optional |
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| AT Protocol |
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| Diaspora |
optional |
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| Bridgy Fed (Multi-Protocol Bridge) |
optional |
optional |
optional |
optional |
| OpenID |
optional |
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| OAuth2 |
optional |
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| Post Feeds / Syndication (RSS / Atom) |
Atom |
RSS |
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| Mobile and Desktop Apps |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Mobile App (including third party apps) |
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| Progressive Web App (PWA) |
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| Google Play |
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| Apple iOS |
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| Microsoft Store |
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| Amazon Appstore |
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| F-Droid |
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| Customization and Mods |
Hubzilla |
Mastodon |
Threads |
Bluesky |
| Dark Mode / Light Mode |
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| Customize Layout of Your Channel |
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| Select Theme for Your Channel |
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| Change Color Scheme of Theme (if supported by the theme) |
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| Add Widgets to Your Channel & Pages (adds additional functionality) |
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| Addons / Plugins / Apps (adds additional functionality) |
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| Software |
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| Open Source |
MIT |
AGPL |
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MIT/Apache |
| Self-Host (run your own server on your own domain) |
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| Fully Decentralized (does not depend on centralized services to operate) |
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| Key |
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| = Supported feature. |
= Optional feature that usually has to be activated. Some servers may have this feature disabled or limit your options.
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| = Supported, but not necessarily in a way that you expect. May require advanced configuration or extra steps. |
| = Supported via a Third Party. |
| = Not supported. |
| Note: Administrators have the option to change the configuration of their own server, which may effect the features that are available to users. |
Hubzilla
Mastodon
Threads
Bluesky