Notyf is under MIT licence.
Bootstrap Notify is a simple plugin that turns standard Bootstrap alerts into "Growl-like" notifications.
overhang.js is a jQuery plugin to display sleek, instant notifications, confirmations or prompts inside a given element.
Toast is a jQuery plugin to show highly customizable notifications to the user.
Notifier is a jQuery plugin to push notifications on your webpages.
Lobibox is a responsive jQuery messagebox and notification plugin.Both Messageboxes and Notifications has some useful option to customize.
herbyCookie is an easy jQuery plugin asking at user for cookie allowing a website to comply with the EU cookie law.
peekABar is a jQuery plugin for a notification bar with a lot of customization options.
Oh Snap! is a simple jQuery/Zepto notification library designed to be used in mobile apps.
Smoke is a jQuery plugin that is designed for use with Bootstrap 3 and has lots of helpful features including form validation, notifications, progress bar and more.
notifyMe is a simple plugin created for fun and learning for fixed notifications in pages. He works when a button is clicked, errors, validations, info and everything you want.