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TermFlow vs Zellij
Zellij is a modern, approachable multiplexer with the most structured controls of the bunch. TermFlow offers the same panes with a native GUI and a first-party MCP server the agent ecosystem speaks.
Two philosophies.
Zellij
The modern multiplexer.
A friendly, Rust-based take on tmux: floating and stacked panes, layouts, discoverable keybindings, and the most structured control surface of the multiplexers (JSON actions, an event stream, a plugin API, and a new browser client). Free and open source.
TermFlow
Panes with a GUI and MCP.
TermFlow covers the same panes and persistence, but as a native cross-platform GUI with a documented HTTP API and a first-party MCP server — the contract agents already use — rather than a terminal-hosted CLI action surface.
Feature by feature.
| Capability | TermFlow | Zellij |
|---|---|---|
| Platforms | Windows · macOS · Linux (native GUI) | Windows · macOS · Linux |
| Split panes & layouts | ✓ | ✓ |
| Floating & stacked panes | — | Yes ★ |
| Structured control surface | HTTP API + MCP | JSON actions + events |
| Built-in MCP server | ✓ | — |
| Native GUI | ✓ | — |
| Plugin API (WASM) | — | Yes ★ |
| Session persistence | ✓ | ✓ |
| Canvas Mode (visual terminal graph) | ✓ | — |
| Automations (output rules, timers, webhooks) | No-code visual editor | Via WASM plugin (code required) |
| Snippets (reusable commands) | ✓ | — |
| Free & open source | Apache-2.0 | MIT |
Where Zellij wins
Zellij is the multiplexer we'd point a newcomer to: approachable, beautifully designed, with floating and stacked panes, a real WASM plugin API, and the most structured control surface of any multiplexer — and as of 0.44 (March 2026) it runs natively on Windows and adds remote sessions. That plugin API can even match patterns in live output and fire an action, which covers the same ground as our Automations — it just takes writing (or installing) a plugin instead of using a no-code rule editor. If you want a keyboard-driven multiplexer that's easy to learn, it's a delight. TermFlow's difference is shape: a native desktop GUI rather than a terminal-hosted TUI, and a first-party MCP server plus HTTP API — the contract AI agents standardize on — rather than a CLI-and-plugin control surface.
Common questions.
Zellij has JSON actions and events — isn't that an API?
It's a strong scripting surface, and we like it. The difference is that agents standardize on MCP, which Zellij doesn't ship, and TermFlow is a native GUI rather than a terminal-hosted app.
Isn't Zellij cross-platform now too?
Yes — as of 0.44 (March 2026) Zellij runs natively on Windows, so we don't claim the OS list as our edge. Our difference is a native desktop GUI (not a terminal-hosted TUI) and a first-party MCP server the agent ecosystem speaks.
Is it free?
Yes, Apache-2.0 — API and MCP included, free on your machine. See pricing.