Apps — Sindre Sorhus
Lots of free, simple, well-designed, and useful mac apps by this developer
Dato
Quick access to mini calendar and upcoming events in your menu bar + Lots of customization settings
One Thing
Put a single task or goal in your menu bar, or any text or link
Pandan
Passive time tracker that sits in the menu bar. You can see how long you've been in a 'session' at your computer without needing to manually start/stop sessions. It's a good mindfulness tool for working