MenuBar Stats - Advanced Mac system monitor right from the menu bar
Agenda - A date-focused note taking app for both planning and documenting your projects.
iStat Menus - "An advanced Mac system monitor for your menubar."
ToDoBook - Turn your Facebook (& other social media) News feed into a to-do-list.
Stats - Simple macOS system monitor in your menu bar.
Todoist 10 for iOS - A completely new Todoist for iOS