diff --git a/html/ops/host_stats.php b/html/ops/host_stats.php
new file mode 100644
index 0000000000..585062fe4c
--- /dev/null
+++ b/html/ops/host_stats.php
@@ -0,0 +1,127 @@
+<?php
+// This file is part of BOINC.
+// https://boinc.berkeley.edu
+// Copyright (C) 2024 University of California
+//
+// BOINC is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License
+// as published by the Free Software Foundation,
+// either version 3 of the License, or (at your option) any later version.
+//
+// BOINC is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+// See the GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with BOINC.  If not, see <http://www.gnu.org/licenses/>.
+
+// show counts of Linux hosts broken down by libc and vbox version
+
+require_once("../inc/boinc_db.inc");
+
+$max_days = 30;
+    // include only hosts who have done an RPC within this many days
+
+function is_linux($host) {
+    return strstr($host->os_name, 'Linux');
+}
+
+function libc_version($host) {
+    $p = $host->os_version;
+    $n = strpos($p, 'libc ');
+    if ($n === false) return '';
+    $m = strpos($p, ']', $n);
+    if ($m === false) return '';
+    $x = substr($p, $n+5, $m-$n-5);
+
+    $n = strpos($x, ' ');
+    if ($n !== false) return substr($x, 0, $n);
+    return $x;
+
+}
+
+function vbox_version($host) {
+    $p = $host->serialnum;
+    $n = strpos($p, 'vbox|');
+    if ($n === false) return '';
+    $m = strpos($p, ']', $n);
+    if ($m === false) return '';
+    $x = substr($p, $n+5, $m-$n-5);
+    $n = strpos($x, '_');
+    if ($n !== false) return substr($x, 0, $n);
+    $n = strpos($x, 'r');
+    if ($n !== false) return substr($x, 0, $n);
+    return $x;
+}
+
+function main() {
+    global $max_days;
+    $t = time()-$max_days*86400;
+    $hosts = BoincHost::enum("rpc_time>$t");
+    $descs = [];
+    foreach ($hosts as $host) {
+        if (!is_linux($host)) continue;
+        $d = new StdClass;
+        $d->libc = libc_version($host);
+        $d->vbox = vbox_version($host);
+        $descs[] = $d;
+    }
+    show($descs);
+}
+
+// show:
+// counts by libc version
+// counts by libc version for hosts w/ vbox
+// counts by vbox version
+
+function show($descs) {
+    global $max_days;
+    $libc = [];
+    $libc2 = [];
+    $vbox = [];
+    $nv = 0;
+    foreach ($descs as $d) {
+        if (array_key_exists($d->libc, $libc)) {
+            $libc[$d->libc] += 1;
+        } else {
+            $libc[$d->libc] = 1;
+        }
+        if (!$d->vbox) continue;
+        $nv++;
+        if (array_key_exists($d->vbox, $vbox)) {
+            $vbox[$d->vbox] += 1;
+        } else {
+            $vbox[$d->vbox] = 1;
+        }
+        if (array_key_exists($d->libc, $libc2)) {
+            $libc2[$d->libc] += 1;
+        } else {
+            $libc2[$d->libc] = 1;
+        }
+    }
+
+    $n = count($descs);
+    echo "$n Linux hosts active in last $max_days days\n";
+    ksort($libc);
+    echo "libc versions:\n";
+    foreach ($libc as $x=>$count) {
+        if (!$x) continue;
+        echo "$x: $count\n";
+    }
+    ksort($vbox);
+    echo "vbox versions ($nv hosts):\n";
+    foreach ($vbox as $x=>$count) {
+        if (!$x) continue;
+        echo "$x: $count\n";
+    }
+    ksort($libc2);
+    echo "libc versions of hosts with vbox:\n";
+    foreach ($libc2 as $x=>$count) {
+        if (!$x) continue;
+        echo "$x: $count\n";
+    }
+}
+
+main();
+?>