AirSound
Tilt your MacBook — stereo pans with the motion sensor. Menu bar app with a tight bounce loop and a silent center “dead zone.”
Free Download
Developer Roadmaps & Crazy apps
Grab PDF roadmaps by email — and try our experimental macOS utilities from the Crazy apps shelf.
Free materials
Full Stack
Master both frontend and backend development. From React to Node.js, databases to deployment.
Backend
Deep dive into server-side development. APIs, databases, authentication, and microservices architecture.
Frontend
Build beautiful user interfaces. React, Vue, CSS mastery, animations, and responsive design.
QA & Testing
Ensure code quality with automated testing. Unit tests, integration tests, CI/CD, and best practices.
Crazy apps
AppJealousy
Dock apps track how long you ignore them — adjustable jealousy timer, moods, and optional notifications. Menu bar utility for macOS.
Battery DNA
Menu bar battery clarity for macOS — charge state, cycle context, and health cues without opening System Settings.
BreathBar
Guided breathing from the menu bar — presets, session rings, streaks, focus overlay, and optional reminders.