QuadCode

What it does

QuadCode is a desktop app that splits your screen into 4 parallel AI terminal sessions. Run Claude in one pane, Gemini in another, Codex and your machine terminal in the others — all at the same time. Type once in broadcast mode, all 4 answer. Or run them independently on different tasks. Stop switching tabs. Stop losing context. Just run them all and pick what works. Built for developers who use AI heavily and are tired of the tab shuffle.

QuadCode runs Claude, Gemini, Codex & Aider side-by-side in one terminal. 4 AI coding agents in parallel. Mac & Linux. $24.50 lifetime license — no subscription.

Claude, Gemini, Codex, Aider — run them all simultaneously in 4 parallel panes. Native macOS & Linux app, built for developers who move fast. 7-day free trial. No credit card required. Works on macOS Apple Silicon & Linux. I’ve been using QuadCode to build an application that’s now over 80,000 lines of code. Having four separate agent sessions running in parallel has completely changed how I work — I can have Claude working on one feature in one pane while it handles a completely different task in another. I don’t know how I shipped anything before this. Run Claude, Gemini, Codex & Aider side-by-side. Different agent per pane — switch anytime. 4-pane grid,…from getquadcode.com

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  I kept running into a structural problem with AI coding tools. You try one agent. It makes changes. You try another. Now you're manually diffing branches and cleaning up experimental commits. The tools are powerful, but the workflow isn’t designed for comparison. So I built Parallel Code. It runs Claude Code, Codex, and Gemini CLI natively (no API wrapper, no feature abstraction), but isolates each agent in: its own terminal its own Git worktree its own feature branch The workflow becomes: Spawn N worktrees Assign one AI agent per worktree Let them implement independently Compare diffs Merge…

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