Developed and used by the Solus distro, Budgie is written from scratch using components from the Gnome stack. It uses a unified notification and customisation centre called Raven, which also gives you quick access to the calendar, media player controls, system settings and power options. The desktop is also easy to customise and extend, and offers granular control over individual applet settings.
While it doesn’t offer as many widgets as you’d find on established desktops such as Gnome, the project is continuing to improve and the developers provide an intelligent and fun experience, with a lot of focus on improving Raven. There are Ubuntu and Manjaro spins based on Budgie, and Fedora users can fetch it from COPR.