The LinuxNotifier project is dedicated to provide smooth experience to online information/notifications on Linux. You can do a lot of things whithin LinuxNotifier. New email notifications? Yes. Weather information? Yes. To-do list, reminder, control center and a lot of other functionalities waiting for you to explore. More excitingly, with Qt or Python it's especially easily develope your own plugins to meet your needs.
NotificationCenter is part of the LinuxNotifier project, it provides the framework on that other plugins rely.
This project is open source under the MIT license. It's under active developement, contributions are welcome.
* plugin support (Qt and Python)
* cross-platform
* online notifications