diff --git a/tools/update_statistics.pl b/tools/update_statistics.pl
new file mode 100755
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--- /dev/null
+++ b/tools/update_statistics.pl
@@ -0,0 +1,141 @@
+#!/usr/bin/env perl 
+#
+# Actualiza la hoja de estadísticas en Google Docs, a partir de los datos
+# de estadísticas del proyecto OmegaT.
+#
+# Joaquín Ferrero. 20110130
+# Última versión:  20121103
+
+## Módulos --------------------------------------------------------------------
+use v5.16;
+
+use autodie;
+use File::Slurp;
+use Net::Google::Spreadsheets;
+
+
+## Configuration --------------------------------------------------------------
+
+## Google Docs access
+my $google_user   = 'emilio@gmail.com';
+my $google_pass   = 'password';
+my $google_file   = 'PerlDoc-ES.Traducción';
+my $google_spread = 'Estadísticas';
+
+## Path to OmegaT path
+my $dir_project   = '/home/explorer/perlspanish';
+
+my %fields        = (
+    File		=> 'archivo',
+    Description		=> 'desc.',
+    Translator		=> 'traductor',
+    Reviewer		=> 'revisor',
+    Version		=> 'vers.',
+    Segments		=> 'seg.',
+    Seg_rest		=> 'seg.pend.',
+    Seg_perc		=> 'seg',
+    Uni_Seg		=> 'unicos',
+    Uni_Seg_rest	=> 'unic.pend.',
+    Uni_Seg_perc	=> 'unico',
+    Words		=> 'palabras',
+    Words_rest		=> 'pal.pend.',
+    Words_perc		=> 'pal',
+    Uni_Words		=> 'unicas',
+    Uni_Words_rest	=> 'unicaspend.',
+    Uni_Words_perc	=> 'unica',
+    Priority		=> 'interes',
+);
+
+# 
+my @titles = qw(
+    Segments	Seg_rest	Uni_Seg		Uni_Seg_rest
+    Words	Words_rest	Uni_Words	Uni_Words_rest
+);
+
+my %formulas      = (
+    Seg_perc		=> '=1-RC[-1]/RC[-2]',
+    Uni_Seg_perc	=> '=1-RC[-1]/RC[-2]',
+    Words_perc		=> '=1-RC[-1]/RC[-2]',
+    Uni_Words_perc	=> '=1-RC[-1]/RC[-2]',
+    Priority		=> '=(RC[-11]-RC[-8])/RC[-12]',
+);
+
+## End of Configuration -------------------------------------------------------
+
+
+## Constantes -----------------------------------------------------------------
+use constant DEBUG => 1;
+
+
+## Variables ------------------------------------------------------------------
+my %stats;
+my @rows;
+
+
+## Acceso al directorio del proyecto ------------------------------------------
+-d $dir_project					or die "ERROR: OmegaT project directory not found.\n";
+-f "$dir_project/omegat/project_stats.txt"	or die "ERROR: OmegaT project stats file not found.\n";
+
+# Obtener información del proyecto
+for (read_file("$dir_project/omegat/project_stats.txt")) {
+    my @campos = split;
+
+    next if @campos != 17;
+
+    $stats{$campos[0]} = [ @campos[1..8] ];
+}
+
+keys %stats or die "ERROR: Project stats unread.\n";
+
+
+## Conexión con Google Docs ---------------------------------------------------
+@rows = do {
+    say "Connection..."						if DEBUG;
+    my $gdoc = Net::Google::Spreadsheets->new(
+	username => $google_user,
+	password => $google_pass,
+    );
+    die "ERROR: Not access to Google Docs service: $!\n"	if not $gdoc;
+
+    say "Access to book..."					if DEBUG;
+    my $gdoc_book = $gdoc->spreadsheet({ title => $google_file });
+    die "ERROR: Not access to book: $!\n"			if not $gdoc_book;
+
+    say "Spread..."						if DEBUG;
+    my $gdoc_spread = $gdoc_book->worksheet ({ title => $google_spread });
+    die "ERROR: Not found stats' spreadsheet\n"			if not $gdoc_spread;
+
+    $gdoc_spread->rows;
+};
+
+
+## Actualizar la hoja ---------------------------------------------------------
+while (my($i,$row) = each @rows) {
+    my $row_ref = $row->content;
+    my $archive = $row_ref->{ $fields{'File'} };
+
+    if (exists $stats{$archive}) {
+
+	my $are_changes;
+	my %changes = %formulas;
+
+        # actualización de las columnas de datos
+        while(my($j,$title) = each @titles) {
+	    my $tit = $fields{$title};
+
+            if ($row_ref->{$tit} ne $stats{$archive}[$j]) {
+                $changes{$tit} = $stats{$archive}[$j];
+                $are_changes++;
+	    }
+        }
+
+        # actualizar la hoja
+        if ($are_changes) {
+            $row->param(\%changes);
+            say "Updating $archive"				if DEBUG;
+        }
+    }
+}
+
+
+__END__