Claude Code session managers: what exists and what each one solves
Short answer: up to three sessions, the agent view built into Claude Code is enough, free, and needs nothing installed. Beyond that, the problem stops being listing sessions and becomes knowing the state of each without reading text, which needs an app with a real interface. The options are Conductor and CanvasCode on Mac, Nimbalyst cross-platform, and Claude Squad if you prefer the terminal.
What changes past two sessions
With one or two, you remember what each is doing. With five, you do not: one finished ten minutes ago and sits waiting for approval, another stalled on a network call and went quiet, and quiet looks like work. The bottleneck stops being the machine and becomes your attention.
Which is why "session manager" is the wrong term for what people are looking for. Listing sessions is easy. What fixes the day is knowing the state of each without opening it.
The option already installed
Claude Code has an agent view in the terminal itself, showing active sessions grouped by state with the ones needing you at the top. It is not a GUI and it is Claude Code only, but it solves the most common case for free: not losing track of two or three things at once.
If your problem stops there, stop there too. Installing an app for this is solving with weight what is already solved.
When an app with an interface earns its place
When answering these starts costing time: who is waiting on me right now? who crashed? what has this agent changed so far? can I approve without rereading everything? None of those answers well in scrolling terminal text.
And when you mix tools. A panel that only runs Claude Code stops serving the day you open a Codex next to it.
The options, and who each is for
- Conductor: Mac app, runs Claude Code, Codex and Cursor. The review-and-open-PR flow is among the best. Deliberately lean.
- Nimbalyst: open source, free for individuals, and the widest platform coverage (macOS, Windows, Linux and iOS). If you are not on a Mac, start here.
- Claude Squad: open source terminal app with a text interface. Isolates each session in its own worktree. Right for people who find desktop apps a nuisance.
- CanvasCode: macOS, with a canvas where each agent gets its own panel. The difference is the focus on not losing the thread: every agent states in one sentence what it is working on, and you get told when one is stuck even while you are in another project.
Does a stored session keep costing?
No. A closed or stored session consumes nothing: cost is per use, and an idle agent uses nothing. What it does consume is your memory, if you have nowhere to see what it was doing when it stopped.
Can you resume an old session without re-explaining?
That depends on whether the tool stores the conversation, not just the existence of the session. It is the difference between reopening an empty agent with the same name and reopening the same conversation where it stopped. Worth checking before choosing, because it is what hurts most when missing.