Top 5 appindicator open source projects

🚥 Go bindings for libappindicator3 C library

Ubuntu indicator that displays how much load your CPU is under via the dying face from the video game DOOM.

Simple Ubuntu keyboard modifiers indicator

A StatusNotifierHost widget written using the gtk+3 bindings for haskell provided by gi-gtk.

(Discontinued in favor of official client) GTK3 GUI client with systray, for ProtonVPN. Works on top of linux-cli.