Lightweight terminal that has a rich API for extensions
Screenshots
Features
Project groups
Vertical tabs
Split panes
Git worktrees
Quick open & command palette
Text editor with syntax highlighting
Markdown & HTML preview (with Mermaid diagrams)
Image viewer
Extensions
Mobile companion apps (iOS & Android)
Rich input panel with image attachments
Voice input
Notifications (in-app & native macOS)
490+ themes
50+ customizable shortcuts
Workspace & session persistence
Agent Skills
# Drive the workspace from a shell (open projects, splits, send keys, read panes)
npx skills add github.com/muxy-app/muxy/tree/main/Muxy/Resources/skills/muxy-cli
# Author Muxy extensions (manifest, window.muxy API, theming)
npx skills add github.com/muxy-app/muxy/tree/main/Muxy/Resources/skills/muxy-extension
# Or install both into every detected AI harness at once (requires the Muxy CLI)
muxy install-skills
scripts/setup.sh # downloads GhosttyKit.xcframework
swift build # debug build
swift run Muxy # run
scripts/checks.sh # format, lint, build, and test in isolated app storage