notin helps you in reminding things you need to do, random numbers you do not want to save in your contacts and many more through the help of Notifications. The reminder doesn't pop-up or rings, it just sits there and still does it's job most efficiently.
Undisturbed makes the macOS Do Not Disturb mode really distraction free by hiding the notifications on your Dock icons so you won't get loose your focus by the red icon when receiving a new mail or message.
Cleared any notification accidentally? Want to check any notification that you already deleted? Then Notification History Log will help you.
This is the only application you need to retrieve all your old notifications. With this app you can have access to Notification History Log where you can find old notifications that you cleared recently