About Dev 3.0
This desktop app is a Kanban board for running many AI coding agents in parallel without losing track of them. Every card on the board is a task, and every task becomes its own git branch, isolated git worktree and real terminal, so several agents can work on the same repository at once without merge conflicts. It works with any terminal based agent, including Claude Code, Codex CLI, Gemini CLI and opencode.
It is built for solo developers and small studios who now act as the whole team and juggle five or more agents across repositories. Each task opens a terminal built on the Ghostty rendering engine with tmux preconfigured, so users can split panes and run several agents side by side. Hovering over a card shows a live preview of its terminal, and agents ring a bell with a badge on the card when they need input. Other features include running the same task three, five or ten times with different agents or prompts and keeping the best attempt, a PR review mode that asks the agent to review rather than modify code, per project setup scripts, one click dev servers with automatically allocated ports, copy on write cloning of heavy dependency folders, custom workflow columns with agents that start automatically when a task lands in them, an automatic AI review step, and Spaces for grouping projects.
The app is free and open source under the Apache 2.0 licence, with no pricing page. It installs through Homebrew or a direct download on macOS, and is also available for Windows and Linux; users bring their own agent subscriptions.
The product name contains a hyphen, so it is referred to generically here; it is published by the developer known as h0x91b.