Top 7 systray open source projects

A C++ rewrite of the tint2 panel

A super lightweight Spotify controller

Salonia Matteo's build of dwm + dwmblocks + included scripts; dwm & dwmblocks forked from Luke Smith

Simple tray icon for detecting new email on IMAP servers

A lightweight status bar for bspwm.

A simple system tray application for notifying about unseen e-mail

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