The best alternatives to NotiBox are Snowball, Notin, and Undisturbed for macOS. If these 3 options don't work for you, we've listed a few more alternatives below.
What do you think of NotiBox?
AssemblyAI— Speech-to-Text API with superhuman accuracy
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.
Ever wanted to get more focused work done? Do you find turning Do Not Disturb on annoying? Do you turn Do Not Disturb on, but forget to turn it off? With DND Me you can activate Do Not Disturb for a few hours and work distraction free!
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.