GitButlerGitButler is a Git-backed change management tool designed for modern AI-driven coding workflows, offering parallel and stacked branches along with unlimited undo. It uses AI to generate branch names, commit messages, and PR descriptions, and supports commit editing across branches as well as GitHub/GitLab PR integration and status checks. It also provides a built-in Claude Code GUI, runs multiple parallel agents in a single working directory, and can integrate with other agents via an MCP server.