monsterwm output to dzen2 or some_sorta_bar

monsterwm2bar

ff="/tmp/monsterwm.fifo"
[[ -p $ff ]] || mkfifo -m 600 "$ff"

# desktop names
ds=("web" "dev" "foo" "null")

# layout names
ms=("T" "M" "B" "G" "F")

while read -t 60 -r wmout || true; do
    if [[ $wmout =~ ^(([[:digit:]]+:)+[[:digit:]]+ ?)+$ ]]; then
        read -ra desktops <<< "$wmout" && unset r
        for desktop in "${desktops[@]}"; do
            IFS=':' read -r d w m c u <<< "$desktop"
            ((c)) && fg="\\f4" i="${ms[$m]}" || fg="\\f3"
            ((u)) && w+='\f5!'
            r+="$fg${ds[$d]} ${w/#0/\\f8-} \\f3:: "
        done
        r="${r%::*}"
    fi
    printf "\\\l%s\\\r%s\n" "$r\\f5[\\f3$i\\f5]" "$(date +"%F %R")"
done < "$ff" | bar &

# pass output to fifo
monsterwm > "$ff"

monsterwm2dzen

#!/usr/bin/env bash

# create a fifo to send output
ff="/tmp/monsterwm.fifo"
[[ -p $ff ]] || mkfifo -m 600 "$ff"

while read -r; do
    # filter output to only what we want to match and parse
    [[ $REPLY =~ ^(([[:digit:]]+:)+[[:digit:]]+ ?)+$ ]] && read -ra desktops <<< "$REPLY" || continue
    for desktop in "${desktops[@]}"; do
        # set values for
        # d - the desktop id
        # w - number of windows in that desktop
        # m - tiling layout/mode for that desktop
        # c - whether that desktop is the current (1) or not (0)
        # u - whether a window in that desktop has an urgent hint set (1) or not (0)
        IFS=':' read -r d w m c u <<< "$desktop"

        # name each desktop 
        case $d in
            0) d="web" s=""   ;;
            1) d="dev" s="::" ;;
            2) d="foo" s="::" ;;
        esac

        # the current desktop color should be #d11783
        # we will also display the current desktop's tiling layout/mode
        ((c)) && f="#d11783" && case $m in
            # name each layout/mode with a symbol
            0) i="[T]" ;;
            1) i="[M]" ;;
            2) i="[B]" ;;
            3) i="[G]" ;;
        esac  || f="#5e7175"

        # if the desktop has an urgent hint its color should be #ff0000
        ((u)) && f="#ff0000"

        # if the desktop has windows print that number next to the desktop name
        # else just print the desktop name
        ((w)) && r+="$s ^fg($f)$d $w^fg() " || r+="$s ^fg($f)$d^fg() "
    done

    # read from fifo and output to dzen2
    printf "%s%s\n" "$r" "$i" && unset r
done < "$ff" | dzen2 -h 18 -w 400 -ta l -e -p -fn "-misc-terminusmod.icons-medium-r-normal--12-120-72-72-c-60-*-*" &

# pass output to fifo
monsterwm > "$ff"

monsterwm2dzen_with-titles_dwm-like

#!/usr/bin/env bash

: "${wm:=$HOME/Projects/monsterwm/monsterwm}"
: "${ff:="/tmp/$RANDOM.monsterwm.fifo"}"

tags=('1' '2' '3' '4')

layouts=('[]=' '[ ]' 'TTT' '[#]') 

conky | dzen2 -h 18 -x 320 -ta r -e -p -fn &

# Check if it's a pipe, otherwise create it
[[ -p $ff ]] || mkfifo -m 600 "$ff"

while read -t 60 -r wmout || true; do
    desktops=( $(cut -d"|" -f1 <<< "$wmout") )
    title="$(cut -d"|" -f2- <<< "$wmout")"

    if [[ "${desktops[@]}" =~ ^(([[:digit:]]+:)+[[:digit:]]+ ?)+$ ]]; then
        unset tmp

        for desktop in "${desktops[@]}"; do
            IFS=':' read -r d w m c u <<< "$desktop"

            # Tags labels
            label="${tags[$d]}"

            # Is this the current desktop ? save the layout
            ((c)) && fg="#fefefe" bg="#204a87" && layout="${layouts[$m]}" \
                  || fg="#b3b3b3" bg=""

            # Has windows ?
            ((w)) && fg="#fce94f"

            # Urgent windows ?
            ((u)) && fg="#ef2929"

            tmp+="^fg($fg)^bg($bg) $label ^bg()^fg()"
        done
    fi

    # Merge the clients indications, the tile and the info
    echo "$tmp $layout $title"
done < "$ff" | dzen2 -w 320 -h 18 -ta l -e -p &

while :; do "$wm" || break; done | tee -a "$ff"
#$wm > "$ff"

monsterwm2some_sorta_bar

#!/usr/bin/env bash

# create a fifo to send output
ff="/tmp/monsterwm.fifo"
[[ -p $ff ]] || mkfifo -m 600 "$ff"

# desktop names
ds=("web" "dev" "foo" "null")

# layout names
ls=("T" "M" "B" "G" "F")

while read -t 60 -r wmout || true; do
    if [[ $wmout =~ ^(([[:digit:]]+:)+[[:digit:]]+ ?)+$ ]]; then
        read -ra desktops <<< "$wmout" && unset r
        for desktop in "${desktops[@]}"; do

            # set values for
            # d - the desktop id
            # w - number of windows in that desktop
            # m - tiling layout/mode for that desktop
            # c - whether that desktop is the current (1) or not (0)
            # u - whether a window in that desktop has an urgent hint set (1) or not (0)
            IFS=':' read -r d w m c u <<< "$desktop"

            # if this is the current desktop, color should be '&4'
            # if this is the current desktop, also set the layout name
            # else the color should be '&3'
            ((c)) && fg="&4" i="${ls[$m]}" || fg="&3"

            # if the desktop has an urgent hint, add an 
            # exclamation mark '!' with '&5' color
            ((u)) && w+='&5!'
            r+="$fg${ds[$d]} $w &3:: "
        done
        r="${r%::*}"
    fi

    # read from fifo and output to some_sorta_bar
    printf "&L%s&R%s\n" "$r&5[&3$i&5]" "$(date +"%F %R")"
done < "$ff" | some_sorta_bar &

# pass output to fifo
monsterwm > "$ff"

@livinglifeback I had forgotten a & at the end of the dzen2 call.
the only thing you need to run the script is to make it executable and add

exec /path/to/monsterwm2dzen

in your ~/.xinitrc

added script to output to bar by @LemonBoy

Also check mstatusbar
Use it as indicated in monsterbar.sh replacing the above scripts