jwm 2.3.6 on Debian Stable (9.5)

jwm

very small lightweight pure X11 window manager with tray and menus

Low resource Window manager ideal for older PCs. It uses a minimum of external libraries, thus very little memory, includes virtual screens, menubar and root-menu popup.
F(?) Virtual Window Manager

fvwm

F(?) Virtual Window Manager

FVWM is a powerful ICCCM2 compliant multiple virtual desktop window manager for the X Window System. FVWM requires relatively little memory.
WindowMaker dock app that shows your current weather

wmweather+

WindowMaker dock app that shows your current weather

This provides a monitor on a 64x64 mini window that displays the current weather conditions, forecast data (US only), and optionally a radar image. It will also watch for various warnings and display them using an external command.
simple Xfce oriented text editor

mousepad

simple Xfce oriented text editor

Mousepad is a graphical text editor for Xfce based on Leafpad.
X terminal program with Thai languague support

xiterm+thai

X terminal program with Thai languague support

xiterm+thai is an X terminal emulator program with Thai language support. It has built-in Thai keyboard input support. You could also use the X11 XKB extension to input Thai characters.
X11 window manager inspired by Plan 9's rio

9wm

X11 window manager inspired by Plan 9's rio

It provides a very simple and clean user interface. It is click-to-type. It uses the X11 font system (which, unfortunately, means no Unicode support).