Saggar vs tmux
tmux is not wrong. It was built before anything in a pane could ask you a question.
tmux is thirty years of good engineering, ISC licensed, on every machine you will ever SSH into, and it will outlive everything else named on this page. If you have a working configuration, nothing here is an argument for throwing it away.
It has one gap, and it is not a flaw: tmux models panes, not what is inside them. A pane running a passing test suite and a pane sitting on "Allow edit to RootView.swift?" look identical. With one agent that is fine, because you are watching it. With six it is the whole problem.
Saggar reads the contents. It classifies each session, orders the ones waiting on you, and puts them a keystroke away.
What tmux does well
- Sessions survive a disconnected SSH connection, and reattach from anywhere.
- Runs on every POSIX system, including the servers your agents deploy to.
- Scriptable, composable, and endlessly configurable.
- ISC licensed, free, and already installed.
- Nothing to trust: no account, no network, no vendor.
Where Saggar takes a different line
- Sessions are classified — needs you, working, idle, finished, failed — from what the agent actually printed, not from whether a pane is focused.
- One priority-ordered queue of everything waiting on a decision, walked with ⌘J, plus restrained alerts rather than a bell.
- A Mac window: menus, keyboard switching, a command palette, terminal search, prompt jumping, splits, quick runs, and persistent monitors for dev servers.
- A phone client that shows the prompt and takes your answer, instead of reattaching over SSH on a phone keyboard.
- Project context around it all — branch, worktree, dirty files, and listening ports, per codebase.
Side by side
YesPartlyNo
| Saggar | tmux | |
|---|---|---|
| Native Mac appA real Mac window with menus, keyboard shortcuts, split panes, and themes — not a text UI or a web view. | Yes. Swift and SwiftUI, built against macOS 26.Swift and SwiftUI, built against macOS 26. | No. A multiplexer. It draws panes inside whatever terminal runs it.A multiplexer. It draws panes inside whatever terminal runs it. |
| Status without lookingEach session says what it is doing, so you don't read five transcripts to find the one that stopped. | Yes. Needs you, working, idle, finished, or failed, re-read every two seconds.Needs you, working, idle, finished, or failed, re-read every two seconds. | No. A pane is a pane. Nothing reads what the agent inside it is doing.A pane is a pane. Nothing reads what the agent inside it is doing. |
| One ordered attention queueEverything waiting on a decision, collected in priority order and walkable from the keyboard. | Yes. Prompts, failures, and finished work form one queue. ⌘J walks it.Prompts, failures, and finished work form one queue. ⌘J walks it. | No. No notion of a session waiting on you.No notion of a session waiting on you. |
| Answer from your phoneRead a terminal and reply to its prompt while you are away from the Mac. | Yes. The Companion runs in any browser. Pair once by scanning a QR code.The Companion runs in any browser. Pair once by scanning a QR code. | Partly. Reattach over SSH, if you will drive a phone keyboard.Reattach over SSH, if you will drive a phone keyboard. |
| Work survives a disconnectAgents keep running when the network drops, the lid closes, or the machine restarts. | Partly. Sessions and scrollback are restored, and idle sleep is held off while work needs you. A closed lid still stops it.Sessions and scrollback are restored, and idle sleep is held off while work needs you. A closed lid still stops it. | Yes. The server keeps sessions through disconnects and SSH drops.The server keeps sessions through disconnects and SSH drops. |
| Project workspaceBranch, worktree, dirty files, listening ports, notes, and startup commands, kept per codebase. | Yes. Tracked live, and stored in .saggar/ beside the code where agents can read it.Tracked live, and stored in .saggar/ beside the code where agents can read it. | No. Session and window names are the whole model.Session and window names are the whole model. |
| Works without an accountInstall it and use it without signing in to anything. | Yes. The Mac app needs no account. Sign in only when you want your phone to reach it.The Mac app needs no account. Sign in only when you want your phone to reach it. | Yes. No account, no network, no vendor.No account, no network, no vendor. |
| Open sourceYou can read the code, fork it, and keep it if the company stops. | No. Closed source.Closed source. | Yes. ISC licensed, and already on the machine.ISC licensed, and already on the machine. |
| Runs beyond macOSLinux and Windows, for people who don't work on a Mac. | No. macOS 26 Tahoe or later, on Apple silicon.macOS 26 Tahoe or later, on Apple silicon. | Yes. Anywhere with a POSIX terminal.Anywhere with a POSIX terminal. |
Claims about tmux come from its own documentation and were last checked in August 2026. If something here is out of date, tell us and we will fix it.
Which one
Pick tmux
Keep tmux if you work over SSH, need Linux, want sessions that survive a reboot, or simply have a configuration that works. It also runs perfectly well inside Saggar.
Pick Saggar
Add Saggar if you are on a Mac and the question you keep asking is which pane needs you, rather than how to keep panes alive.
Other comparisons
Saggar vs cmux
The closest comparison on this site, and the hardest one to win.
Saggar vs herdr
Different layers of the same problem. You can run both.
Saggar vs Warp
Warp rebuilds the terminal. Saggar organises what you run in it.
Saggar vs an IDE terminal
The panel is fine for one agent. It was never a supervision surface.
Saggar vs Claude Code
Not a competitor. Saggar's whole job is running this well.