cmux vs. Alacritty
| Feature | cmux | Alacritty |
|---|---|---|
 |  | |
| Tagline | A Ghostty-based macOS terminal with vertical tabs and notifications for AI coding agents. | A fast, cross-platform, GPU-accelerated terminal emulator. |
| Website | https://cmux.com | https://alacritty.org |
| Language | swift | rust |
| Date Created | February 12, 2026 | January 6, 2017 |
| Platform | macos | macos windows linux bsd |
| File Size | ~66.0 MB | |
| Image / Terminal Graphics Protocol Support | Yes | No |
| Sixel Support | No | No |
| GPU Acceleration | Yes | Yes |
| True Color (24-bit) | Yes | Yes |
| Font Ligatures | Yes | No |
| Tabs | Yes | No |
| Split Panes | Yes | No |
| OSC 52 Clipboard | Yes | Yes |
| OSC 8 Hyperlinks | Yes | Yes |
| Unicode Support | Yes | Yes |
| Notifications | Yes | No |
| Kitty Graphics Protocol | Yes | No |
| iTerm2 Inline Images | No | No |
| 3D Mode | No | No |
| Inline 3D Support | No | No |
| Ratty Graphics Protocol | No | No |
| Glyph Protocol | No | No |
| Kitty Keyboard Protocol | Yes | Yes |
| Synchronized Output | Yes | Yes |
| Styled Underlines | Yes | Yes |
| Shell Integration | Yes | No |
| Drop-down Mode | No | No |
| Built-in Multiplexer | Yes | No |
| Config Format | JSON | toml |
| Source Code Availability | Open Source (GPL-3) | Open Source (apache-2, mit) |
| Source Code | https://github.com/manaflow-ai/cmux | https://github.com/alacritty/alacritty |
| Development State | active | active |
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