status-bar
A highly configurable Windows status bar written in Python.
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A lightweight mac status bar development port monitor.
A lightweight cross-platform status bar app that monitors and manages development processes running on configurable ports. The app provides real-time process detection and allows you to kill individual processes or all processes at once.
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polybar is a fast and intuitive to use tool for creating status bars. It aims to help users build beautiful and highly customizable status bars for their desktop environment, without the need of having a black belt in shell scripting.
xmobar is a minimalistic status bar. It's usable with any window manager in X11 and (via its text output mode) Wayland.
Taffybar is a GTK-based desktop information bar (status bar), intended primarily for use with XMonad, though it can also function alongside other EWMH compliant window managers. It's similar in spirit to xmobar, but it differs in that it gives up some simplicity for a reasonable helping of GTK 3 eye candy.