This is the first update on what's on the #FediDeck Multi-Column App For Mastodon and some compatible ActivityPub systems. Follow this account for updates.
As of 1/6/2026
FediDeck.app Feature List
Note: This is a pre-alpha application.
Support development:
https://ko-fi.com/fedideck
Important: You do not need to provide your Mastodon account username/password.
The username/password referenced is for the app only, not your Mastodon account.
Multi-Account Management
- Connect multiple Mastodon accounts from any instance
- Switch between accounts easily via a dropdown in the header
- Post from any connected account — select which account to post from directly in the compose dialog
- All Accounts timeline — view a combined feed from all your connected accounts in one column
Customizable Column-Based Layout
Available Column Types
- Home Timeline
- Notifications
- Mentions
- Bookmarks
- Direct Messages (Conversations)
- Local Timeline
- Public Instance Feed (any Mastodon instance, no login required)
- Explore / Federated Timeline
- Lists
- Hashtag feeds
- Search results
Column Features
- Drag-and-drop column reordering
- Column persistence — layouts are saved and restored between sessions
- Auto-refresh intervals (30 seconds to 10 minutes)
- Infinite scroll pagination — load older posts as you scroll
Composing Posts
Full-featured compose dialog with:
- Character counter (500 character limit)
- Visibility settings:
- Public
- Unlisted
- Private
- Direct
- Content warnings / spoiler text support
- Media attachments:
- Up to 4 images or videos per post
- Alt text support
- Poll creation:
- 2–4 options
- Customizable expiration
- Single or multiple choice
- Emoji picker
- Quote posting (on supported Mastodon instances/forks)
- Reply threading — replies automatically include relevant mentions
Post Interactions
- Reply to posts
- Boost / Reblog posts
- Favorite / Star posts
- Bookmark posts
- Vote on polls
- Edit your own posts
- Delete your own posts (with confirmation)
- Copy post text to clipboard
- View full threads and conversation context
Direct Messaging
- Dedicated conversations column for private messages
- Threaded conversation view
- Send new messages and replies within conversation threads
Profile Features
- Profile hover cards showing:
- Avatar and header image
- Display name and handle
- Bio
- Follower, following, and post counts
- Recent posts preview
- “Follows you” badge (when applicable)
- Follow / Unfollow button
- Add followed accounts to existing lists
- Clickable @mentions with profile previews
- Clickable hashtags for quick hashtag column creation
Media & Content
- Image lightbox with keyboard navigation
- Alt text display for images
- Automatic link preview cards
- Content warning support — spoilered posts are hidden until revealed
- Video playback support
Security
- Two-Factor Authentication (2FA / MFA) using TOTP authenticator apps
- Recovery codes:
- Generate
- Download
- Regenerate
- Session management:
- View active sessions
- Sign out other devices
- Secure OAuth authentication with Mastodon instances
Public Feeds (No Account Required)
- View any instance’s public local feed without authentication
- Browse by simply entering an instance URL
User Experience
- Dark and light theme support
- Responsive design for multiple screen sizes
- Real-time notification updates
- Consistent loading states and error handling