Latex Character count with spaces. Depends on the texcount library for Latex.

counter.ps1

function countLatex{
	param([string] $file)
	$c = texcount .\$file.tex -char | select-string "Letters in text";
	$c = [int]$c.Line.substring(17);
	$w = texcount .\$file.tex | select-string "Words in text";
	$w = [int]$w.Line.substring(15)
	$total = $c + $w;
	return $total;
}

function countLatexList{
	param([array] $texFiles)
	$total = 0;
	$counts = @();
	$texFiles | Foreach-Object { $total += $cur = countLatex($_); $counts+= $cur; }
	for ($i = 0; $i -lt $texFiles.Length; $i++)
	{
		$cur = $counts[$i];
		$percent = [math]::Round($cur / $total * 100, 2);
		$text = $texFiles[$i] + ".tex: Characters (including space): $cur ($percent%)";
		echo $text;
	}
	echo "Total: $total" 
}