Sludge

A native GTK4/libadwaita Slack client for the Linux desktop built with Rust.

Sludge connects to Slack using browser session tokens (xoxc/xoxd) and communicates over Slack's RTM WebSocket API for real-time messaging. It provides a lightweight, keyboard-friendly alternative to the official Electron-based Slack app.

Features

• Channel and DM browsing with unread counts
• Threaded conversations
• File uploads and image previews
• Emoji and @mention autocomplete
• Reactions (add, remove, view)
• Desktop notifications with click-to-navigate
• Full-text message search
• Google Meet call integration
• Presence indicators and user status
• Local message caching with SurrealDB

Building

cargo build --release

Requires GTK4 and libadwaita development libraries.

License

GPL-3.0-or-later