Séance
no1msd.github.io
What it is
Séance is a free, Linux-only terminal multiplexer for tracking AI coding-agent sessions. It follows Claude Code, Codex, Pi, OpenCode, and Antigravity CLI sessions, and shows whether each is working, awaiting permission, or idle. Permission requests and task completions can generate desktop notifications with unread tracking. Its panes scroll horizontally, with workspaces, tabs within columns, a command palette, focus-follows-mouse, and session persistence across restarts. The app uses GTK4, libadwaita, and libghostty, and supports X11 and Wayland. The `seance ctl` command connects to a running instance over a Unix domain socket; commands can return JSON, manage workspaces and panes, send input, and read terminal output. The project states that it has no telemetry and is licensed under MIT. Installation options include Arch Linux AUR, a Nix flake, and an x86_64 AppImage. OpenCode remote attach sessions and `--pure` launches are not tracked. Séance is pre-1.0, and only the latest release receives security fixes.
Spec sheet
- Purpose
- Séance is a scrolling terminal multiplexer that tracks AI coding agent sessions.Read 8 Oct 2026 · github.com
- Privacy
- The project states that Séance has no telemetry.Read 8 Oct 2026 · github.com
- Support
- The maker welcomes bug reports, feature requests, and pull requests, and directs questions and show-and-tell to GitHub Discussions.Read 7 Oct 2026 · github.com
- License
- Séance is released under the MIT license.Read 8 Oct 2026 · github.com
- Additional integrations
- Release notes list OpenCode and Antigravity CLI session status tracking and notifications.Read 7 Oct 2026 · github.com
- Agent integrations
- It auto-tracks Claude Code, Codex, Pi, OpenCode and Antigravity CLI sessions.Read 8 Oct 2026 · github.com
- Agent tracking
- It automatically tracks Claude Code, Codex, and Pi sessions, showing whether they are working, waiting for permission, or idle.Read 7 Oct 2026 · github.com
- Automation
- The seance ctl command communicates with the running app over a Unix domain socket; commands support JSON output and can manage workspaces and panes, send input, and read terminal output.Read 7 Oct 2026 · github.com
- Automation API
- The seance ctl command communicates with the running instance over a Unix domain socket; commands support JSON output.Read 8 Oct 2026 · github.com
- Compatibility limit
- The maker says OpenCode remote attach sessions and --pure launches are not tracked.Read 8 Oct 2026 · github.com
- Install options
- The maker documents Arch Linux AUR, Nix flake and x86_64 AppImage installation options.Read 8 Oct 2026 · github.com
- Installation
- The maker lists Arch Linux AUR, Nix flake, and x86_64 AppImage installation options.Read 7 Oct 2026 · github.com
- Live status
- The sidebar tracks whether sessions are working, waiting for permission or idle.Read 8 Oct 2026 · github.com
- Notifications
- Permission requests and task completions appear as desktop notifications with unread tracking.Read 8 Oct 2026 · github.com
- Other features
- It includes workspaces, session persistence across restarts, tabs within columns, a command palette, focus-follows-mouse, and no telemetry.Read 7 Oct 2026 · github.com
- Requirements
- Building from source requires Zig 0.16.x, GTK4, libadwaita, OpenGL 4.3+ and Linux.Read 8 Oct 2026 · github.com
- Security reporting
- The security policy asks users to report security issues privately through GitHub and says reports are acknowledged within 72 hours.Read 7 Oct 2026 · github.com
- Security reports
- The security policy asks for private vulnerability reports and says the maintainer aims to acknowledge them within 72 hours.Read 8 Oct 2026 · github.com
- Security support limit
- Séance is pre-1.0, and only the latest released version is supported with security fixes.Read 7 Oct 2026 · github.com
- Session features
- It includes workspaces, session persistence across restarts, tabs within columns, a command palette and focus-follows-mouse.Read 8 Oct 2026 · github.com
- Support status
- Séance is pre-1.0 and only the latest released version is supported with security fixes.Read 8 Oct 2026 · github.com
- Terminal and display
- It uses GTK4, libadwaita and libghostty, with X11 and Wayland support, blur and transparency.Read 8 Oct 2026 · github.com
- Terminal and layout
- It uses GTK4, libadwaita, and libghostty, and supports X11 and Wayland with a horizontally scrolling pane layout.Read 7 Oct 2026 · github.com
Plans and prices
Free and open source Free Linux · X11 or Wayland · MIT license Read 8 Oct 2026 · github.com
Strong points and limits
Strong points
- Tracks five listed AI coding-agent session types
- Shows working, permission-waiting, and idle states
- Supports X11 and Wayland
- Persists sessions across restarts
- No telemetry; licensed under MIT
Limits
- Linux only
- OpenCode remote attach and `--pure` sessions are not tracked
- Only the latest release receives security fixes
- Pre-1.0 software
Who it suits
Séance suits Linux users who want a local terminal workspace for tracking supported AI coding-agent sessions. It supports X11 and Wayland and includes a command-line interface for interacting with the running app.
Verdict
Séance brings agent status, notifications, and terminal controls into a Linux desktop multiplexer. Note its tracking exclusions and limited security-fix support before relying on it.
Where Specifiction places it
- Terminal Multiplexers#9 of 298.0
