A fast, lightweight GUI viewer for Mach-O binaries — built with Tauri 2 + React + Rust. No Xcode required. Just drop a file and explore.
Most Mach-O tools are either CLI-based (otool, nm, objdump) or heavyweight IDE plugins.
Spectra is a standalone native macOS app that gives you an interactive, visual way to explore
any Mach-O binary in seconds.
| 📋 Header | Magic, CPU type, file type, flags |
| 📦 Load Commands | All LCs with full field breakdown — LC_SEGMENT, LC_DYLIB, LC_RPATH, LC_UUID, LC_MAIN, LC_BUILD_VERSION, … |
| 🧩 Segments & Sections | VM address, file offset, protection, section type (S_REGULAR, S_ZEROFILL, …) |
| 🔤 Symbol Table | Real-time search, full type parsing — N_SECT, N_FUN, N_SO, N_GSYM, STAB debug symbols |
| 🔗 Dynamic Libraries | Dependency list with current & compatibility versions |
| 🔢 Hex View | Paginated viewer, seek slider, jump-to-offset, byte-range highlight |
| 🖱️ Cross-navigation | Double-click any node → jump to its exact bytes in Hex View |
| 🍎 FAT binary | Switch between x86_64 / ARM64 architectures |
UX extras: drag & drop, recent files, resizable sidebar, keyboard navigation, copy-to-clipboard on every value.
Download the latest .dmg from Releases, open it, and drag Spectra.app to Applications.
First launch: right-click → Open to bypass Gatekeeper (unsigned build).
Requirements: macOS 11+, Apple Silicon (ARM64)
# Prerequisites: Rust (stable) + Node.js ≥ 18
git clone https://github.com/Yessi-cmd/spectra
cd spectra
npm install
npm run tauri dev # development
npm run tauri build # production .dmg| Desktop shell | Tauri 2 |
| Frontend | React 19 + TypeScript + Vite |
| Mach-O parser | goblin (Rust) |
| Styling | Hand-written CSS, zero UI libraries |
src/
├── App.tsx # Root, state management
├── types.ts # TS interfaces (mirrors Rust structs)
└── components/
├── Toolbar.tsx # Top bar + recent files dropdown
├── Sidebar.tsx # Tree navigator (keyboard support)
├── DetailPanel.tsx # Detail views for every node type
├── HexViewer.tsx # Hex viewer with highlight
└── WelcomeScreen.tsx
src-tauri/src/
├── lib.rs # Tauri command handlers
└── parser.rs # Mach-O parser (goblin wrapper)
MIT