diff --git a/README.md b/README.md
index 85ecd86..d500e63 100644
--- a/README.md
+++ b/README.md
@@ -178,6 +178,16 @@ conf.probe.gitea.database.password=
 conf.probe.target=/srv/statoolinfos/well-known/statoolinfos/foo.bar.org-metrics.properties
 ```
 
+### GSL metrics
+
+Configuration template:
+
+```
+conf.probe.types=GSL
+conf.probe.gsl.stats=/foo/bar/stats.properties
+conf.probe.target=/srv/statoolinfos/well-known/statoolinfos/foo.bar.org-metrics.properties
+```
+
 ### LibreQR metrics
 
 Configuration template:
diff --git a/src/fr/devinsy/statoolinfos/metrics/Prober.java b/src/fr/devinsy/statoolinfos/metrics/Prober.java
index b6b4a5e..4bdca7d 100644
--- a/src/fr/devinsy/statoolinfos/metrics/Prober.java
+++ b/src/fr/devinsy/statoolinfos/metrics/Prober.java
@@ -40,6 +40,7 @@ import fr.devinsy.statoolinfos.core.StatoolInfosException;
 import fr.devinsy.statoolinfos.core.StatoolInfosUtils;
 import fr.devinsy.statoolinfos.metrics.etherpad.EtherpadProber;
 import fr.devinsy.statoolinfos.metrics.gitea.GiteaProber;
+import fr.devinsy.statoolinfos.metrics.gsl.GSLProber;
 import fr.devinsy.statoolinfos.metrics.http.HttpAccessLogAnalyzer;
 import fr.devinsy.statoolinfos.metrics.http.HttpErrorLogAnalyzer;
 import fr.devinsy.statoolinfos.metrics.libreqr.LibreQRProber;
@@ -184,6 +185,18 @@ public class Prober
                 counters.putAll(metrics);
             }
 
+            //
+            if (types.containsAnyIgnoreCase("GSL"))
+            {
+                logger.info("== Probing GSL.");
+
+                File statsFile = configuration.getAsFile("conf.probe.gsl.stats");
+                logger.info("statsfile=[{}]", statsFile);
+
+                PathCounters data = GSLProber.probe(statsFile);
+                counters.putAll(data);
+            }
+
             //
             if (types.containsAnyIgnoreCase("LibreQR"))
             {
diff --git a/src/fr/devinsy/statoolinfos/metrics/gsl/GSLProber.java b/src/fr/devinsy/statoolinfos/metrics/gsl/GSLProber.java
new file mode 100644
index 0000000..6ef0cd6
--- /dev/null
+++ b/src/fr/devinsy/statoolinfos/metrics/gsl/GSLProber.java
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2022 Christian Pierre MOMON <christian@momon.org>
+ * 
+ * This file is part of StatoolInfos, simple service statistics tool.
+ * 
+ * StatoolInfos is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ * 
+ * StatoolInfos 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 Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with StatoolInfos.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package fr.devinsy.statoolinfos.metrics.gsl;
+
+import java.io.File;
+import java.io.FileReader;
+import java.io.IOException;
+import java.util.Properties;
+
+import org.apache.commons.lang3.math.NumberUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import fr.devinsy.statoolinfos.core.StatoolInfosException;
+import fr.devinsy.statoolinfos.metrics.PathCounters;
+import fr.devinsy.strings.StringList;
+
+/**
+ * The Class GSLProber.
+ */
+public class GSLProber
+{
+    private static Logger logger = LoggerFactory.getLogger(GSLProber.class);
+
+    /**
+     * Instantiates a new GSL prober.
+     */
+    private GSLProber()
+    {
+    }
+
+    /**
+     * Probe.
+     *
+     * @param httpLogs
+     *            the http logs
+     * @param httpLogRegex
+     *            the http log regex
+     * @param dataPath
+     *            the data path
+     * @return the path counters
+     * @throws IOException
+     *             Signals that an I/O exception has occurred.
+     * @throws StatoolInfosException
+     *             the statool infos exception
+     */
+    public static PathCounters probe(final File statsFile) throws IOException, StatoolInfosException
+    {
+        PathCounters result;
+
+        result = new PathCounters();
+
+        //
+        Properties properties = new Properties();
+        properties.load(new FileReader(statsFile));
+
+        StringList timemarks = result.getNowTimeMarks();
+
+        // metrics.gsl.articles =
+        String value = properties.getProperty("gsl.articles");
+        if (NumberUtils.isDigits(value))
+        {
+            result.set(Long.valueOf(value), "metrics.gsl.articles", timemarks);
+        }
+
+        // metrics.gsl.articles.pages=
+        value = properties.getProperty("gsl.articles.pages");
+        if (NumberUtils.isDigits(value))
+        {
+            result.set(Long.valueOf(value), "metrics.gsl.articles.pages", timemarks);
+        }
+
+        // metrics.gsl.articles.posts=
+        value = properties.getProperty("gsl.articles.posts");
+        if (NumberUtils.isDigits(value))
+        {
+            result.set(Long.valueOf(value), "metrics.gsl.articles.posts", timemarks);
+        }
+
+        // metrics.gsl.authors =
+        value = properties.getProperty("gsl.authors");
+        if (NumberUtils.isDigits(value))
+        {
+            result.set(Long.valueOf(value), "metrics.gsl.authors", timemarks);
+        }
+
+        //
+        return result;
+    }
+}