About Johannes Millan

I build Parallel Code, the open-source desktop workspace for running AI coding agents in parallel with git-worktree isolation. I also write guides and product comparisons published under my name on this site.

My work focuses on practical developer tooling: isolating agent changes, keeping generated code reviewable, and helping developers use Claude Code, Codex CLI, Gemini CLI, Copilot CLI, Antigravity CLI, and related tools without giving up their existing editor or git workflow.

Parallel Code is developed in public. You can inspect the implementation, release history, issue tracker, and contributions in the GitHub repository, or view my GitHub profile.

Editorial approach

Articles under my name are my own writing. Articles attributed to Parallel Code are prepared and checked using AI and carry a disclosure. Comparisons are published by the product they discuss, so they include that relationship. Product claims are checked against public sources; automated checks can still miss errors or changes in those sources.