Overview

Agentastic is a native macOS IDE designed for running multiple AI coding agents simultaneously. Execute Claude Code, Codex, Gemini, Droid, Amp, OpenCode and other CLI-based agents within isolated git worktrees, each with dedicated terminal sessions. Features integrated diff viewer with automated code review via Claude, Codex, or CodeRabbit, fuzzy file finder with symbol search, and choice of Ghostty or SwiftTerm terminals. Completely free with no sign-up required.

Pricing: Free (pay AI vendors directly for agent access)

Minimum macOS: 14.0 (Sonoma)

Architecture: Apple Silicon, Intel

Key Features

Run multiple AI coding agents in parallel (Claude Code, Codex, Gemini, Droid, Amp, OpenCode)
Git worktree isolation for conflict-free parallel development
Integrated diff viewer with syntax highlighting
Automated code review via Claude, Codex, or CodeRabbit
Choice of Ghostty or SwiftTerm terminals per worktree
Fuzzy file finder with Cmd+P for symbol search and line navigation
Setup hooks via .agentastic/setup.sh for environment configuration
Native macOS app with no Electron
No sign-up required—completely free
Active Discord community