Leftmark / Compare
Claude Squad vs Leftmark
Claude Squad runs several coding agents for you, each in its own tmux session and git worktree, from one terminal app. Leftmark doesn't run agents: it's a Mac app, now in beta, where Claude Code, Codex and Gemini keep one board current, so you can see what every session is doing. Many people will want both.
The difference in one line
Claude Squad manages the agents. Leftmark keeps track of the work. Claude Squad is where you start, switch between and review agent sessions. Leftmark is where you look to see what was asked, what's running, what's stuck and what's waiting on you, across every session, including ones Claude Squad started.
Side by side
| Leftmark | Claude Squad | |
|---|---|---|
| What it is | A board your agents update over MCP | A terminal app that runs several agents in separate workspaces |
| How it works | Agents open and move tickets as they work | tmux for each agent's terminal session, git worktrees for each branch |
| Interface | A Mac app with a board, light and dark | A text interface in your terminal (cs) |
| Agents | Claude Code, Codex and Gemini | Claude Code by default; Codex, Gemini, Aider and others with -p |
| Install | Mac app | brew install claude-squad, needs tmux and the GitHub CLI |
| Availability | Beta, invite only, not open source | Open source (AGPL-3.0) |
Use them together
Because Leftmark connects to the agents rather than replacing how you launch them, a Claude Code session started by Claude Squad can log its work to Leftmark like any other, as long as its folder belongs to one of your Leftmark projects. Claude Squad keeps your agents isolated and running; Leftmark gives you the one-glance view across all of them, plus a record of every request with the session that worked on it, so you can resume that session later.
Choose Claude Squad if
- You want to launch and juggle many agents from one terminal window, each on its own branch.
- You live in tmux and prefer a keyboard-only text interface.
Choose Leftmark if
- You start agents in different places (terminals, editors, Claude Squad) and want one board for all of them.
- You want to see at a glance what needs your answer, without visiting each session.
- You want a record of every request, its status, and the session that worked on it.
See every agent's work on one board
In beta for Apple Silicon Macs. No account, nothing leaves your Mac.
Request an invite →Questions
What is Claude Squad?
Claude Squad is an open-source terminal app that runs several AI coding agents, such as Claude Code, Codex, Gemini and Aider, each in its own tmux session and git worktree.
Can I use Claude Squad and Leftmark together?
Yes. Claude Squad launches and isolates your agents; Leftmark tracks their work. A Claude Code session started by Claude Squad logs to Leftmark like any other, as long as its folder belongs to one of your Leftmark projects.
Is Leftmark open source?
No. Leftmark isn't open source. It runs entirely on your Mac, with no account and no telemetry.