Features

Split panes and layouts

Split the focused pane horizontally (Cmd/Ctrl+Shift+D) or vertically (Cmd/Ctrl+Shift+E); each new pane spawns a fresh shell in the same working directory. Move focus structurally across the tree with Alt+Arrow. Reshape the whole workspace in one keystroke with the four built-in presets — even horizontal, even vertical, main vertical, and tiled.

Workspaces

Paneflow's mental model is two layers — workspaces (independent project contexts) and panes (terminal splits inside a workspace). Add a workspace with Cmd/Ctrl+Shift+N and jump between them with Cmd/Ctrl+1-9. Each workspace is named after the directory it opened from, so the window always tells you where you are.

Dev-server port detection

When a process inside a pane binds a port, Paneflow surfaces it automatically — no manual wiring, no external tools. A burst of terminal activity schedules a scan (debounced 500 ms, re-run at +2 s and +6 s to catch slow-binding servers) that reads the OS socket tables directly: /proc/net/tcp cross-referenced with the pane's process tree on Linux, libproc socket enumeration on macOS. Each port is attributed to the pane whose shell owns it.

In parallel, terminal output is matched against the startup banners of 21 dev servers. Frontend ones — Next.js (including Turbopack), Vite, Nuxt, Remix, Astro, Webpack, Angular — get a clickable URL in the sidebar; backend frameworks from Express, Flask, and Django to Axum and Spring get a labeled port. The edit-refresh loop stays inside the workspace.

Custom action buttons

Pin a frequent command to a one-click button at the top of the window. Give it a name, a shell command — say clear && cargo run for a dev server — and an icon, then click it to run that command in the focused pane. Stop retyping your build, test, or lint invocation on every loop.

Projects

Point Paneflow at a codebase folder and it becomes a project: the file tree opens in the sidebar, the active Git branch shows in the header, and new panes are scoped to that directory. It's the working context every session, split, and action runs inside.

Git worktrees

Create a Git worktree to run an experiment or an independent task without touching your main checkout. Paneflow opens the worktree as its own context — isolated branch, isolated files — so you can run parallel work side by side and throw it away cleanly when you're done.

Project threads, any agent

Inside a project, run multiple threads — independent agent sessions — and choose which CLI drives each one: Claude Code, Codex, OpenCode, Pi, Hermes, Openclaw, Factory's Droid, or anything else on your PATH. Mix them per thread, so one thread can plan with Codex while another implements with Claude Code, side by side in the same project.