Notyf is under MIT licence.
Toast is a jQuery plugin to show highly customizable notifications to the user.
SnackbarJS is a lightweight and jQuery powered plugin to create Material Design snackbars and toasts with ease. It made to work in Bootstrap style, just like the Bootstrap tooltips work.
Simply Toast is a simple toast messages for jQuery. All css styles were extracted from bootstrap, so if you already use bootstrap, you don't need include plugin css file.