Zukitwo - Zukitwo is a Gnome Shell and GTK theme that currently works on Gnome Shell 3.14 and the latest version of GTK.
Streaks - The to-do list that helps you form good habits.
Dark Language - Holistic language, editor, and infra for building backends
Taskful - Deadlines, meet your match.
adapta-gtk-theme - An adaptive Gtk+ theme based on Material Design Guidelines - adapta-project/adapta-gtk-theme
ToDoList - Windows desktop application to stay on top of your daily tasks.