| Name | Description |
|---|---|
| AppManager | Manages the app. |
| ErrorManager | Manages global errors. |
| KeepAwakeManager | Manages the thread-state of the main user interface thread to keep the computer from sleeping while a timer is running in any window. |
| SettingsManager | Manages default settings. |
| ThemeManager | Manages themes. |
| TimerManager | Manages timers. |
| TimerOptionsManager | Manages TimerOptionss. |
| TimerStartManager | Manages recent TimerStart objects. |
| WakeUpManager | Schedules the computer to wake up when the next timer expires if the computer is not being kept awake while one or more timers is running. |