diff --git a/apps/i2psnark/i2psnark-appctx.config b/apps/i2psnark/i2psnark-appctx.config
index e5d7d469f..397412377 100644
--- a/apps/i2psnark/i2psnark-appctx.config
+++ b/apps/i2psnark/i2psnark-appctx.config
@@ -6,3 +6,5 @@
 #routerconsole.browser=/bin/false
 # change browser
 #routerconsole.browser=firefox
+# disable system tray
+#desktopgui.enabled=false
diff --git a/apps/i2psnark/java/build.xml b/apps/i2psnark/java/build.xml
index 824971678..5b64c3136 100644
--- a/apps/i2psnark/java/build.xml
+++ b/apps/i2psnark/java/build.xml
@@ -21,6 +21,8 @@
                 <pathelement location="../../jetty/jettylib/javax.servlet.jar" />
                 <!-- jsp-api.jar only present for debian builds -->
                 <pathelement location="../../jetty/jettylib/jsp-api.jar" />
+                <!-- following jars only for standalone builds -->
+                <pathelement location="../../desktopgui/dist/desktopgui.jar" />
             </classpath>
         </depend>
     </target>
@@ -60,6 +62,7 @@
                 <pathelement location="../../systray/java/build/systray.jar" />
                 <pathelement location="../../jetty/jettylib/org.mortbay.jetty.jar" />
                 <pathelement location="../../jetty/jettylib/jetty-util.jar" />
+                <pathelement location="../../desktopgui/dist/desktopgui.jar" />
             </classpath>
         </javac>
     </target>
@@ -236,6 +239,7 @@
         <zipfileset src="../../streaming/java/build/streaming.jar" />
         <zipfileset src="../../systray/java/build/systray.jar" />
         <zipfileset src="../../../build/jbigi.jar" />
+        <zipfileset src="../../desktopgui/dist/desktopgui.jar" />
         <!-- Countries translations. The i2psnark translations are in the war but it's easier to put these here -->
         <!-- 300KB just to translate "Brazil", but why not... -->
       <!--
diff --git a/apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java b/apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java
index f7132048b..5a51ae907 100644
--- a/apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java
+++ b/apps/i2psnark/java/src/org/klomp/snark/SnarkManager.java
@@ -2566,7 +2566,7 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
                     boolean oldOK = routerOK;
                     // standalone, first time only
                     if (doMagnets && !_context.isRouterContext())
-                        System.out.println(_t("Connecting to I2P") + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort());
+                        dtgNotify(Log.INFO, _t("Connecting to I2P") + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort());
                     routerOK = getBWLimit();
                     if (routerOK) {
                         autostart = shouldAutoStart();
@@ -2580,7 +2580,7 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
                                         String msg = _t("Connecting to I2P");
                                         addMessage(msg);
                                         if (!_context.isRouterContext())
-                                            System.out.println(msg + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort());
+                                            dtgNotify(Log.INFO, msg + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort());
                                         // getBWLimit() was successful so this should work
                                         boolean ok = _util.connect();
                                         if (!ok) {
@@ -2589,7 +2589,7 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
                                             } else {
                                                 msg = _t("Error connecting to I2P - check your I2CP settings!") + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort();
                                                 addMessage(msg);
-                                                System.out.println(msg);
+                                                dtgNotify(Log.ERROR, msg);
                                             }
                                             routerOK = false;
                                             autostart = false;
@@ -2598,7 +2598,7 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
                                             if (!_context.isRouterContext()) {
                                                 msg = "Connected to I2P at " + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort();
                                                 addMessage(msg);
-                                                System.out.println(msg);
+                                                dtgNotify(Log.INFO, msg);
                                             }
                                         }
                                     }
@@ -2653,7 +2653,7 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
                         } else {
                             String msg = _t("Error connecting to I2P - check your I2CP settings!") + ' ' + _util.getI2CPHost() + ':' + _util.getI2CPPort();
                             addMessage(msg);
-                            System.out.println(msg);
+                            dtgNotify(Log.ERROR, msg);
                         }
                     }
                 }
@@ -2674,15 +2674,9 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
             return;
         if (snark.getDownloaded() > 0) {
             addMessageNoEscape(_t("Download finished: {0}", linkify(snark)));
-            ClientAppManager cmgr = _context.clientAppManager();
-            if (cmgr != null) {
-                NotificationService ns = (NotificationService) cmgr.getRegisteredApp("desktopgui");
-                if (ns != null) {
-                    ns.notify("I2PSnark", null, Log.INFO, _t("I2PSnark"), 
-                              _t("Download finished: {0}", snark.getName()),
-                              "/i2psnark/" + linkify(snark));
-                }
-            }
+            dtgNotify(Log.INFO,
+                      _t("Download finished: {0}", snark.getName()),
+                      "/i2psnark/" + linkify(snark));
         }
         updateStatus(snark);
     }
@@ -2773,6 +2767,38 @@ public class SnarkManager implements CompleteListener, ClientApp, DisconnectList
 
     // End Snark.CompleteListeners
 
+    /**
+     *  Send a notification to the user via desktopgui and,
+     *  if standalone, on the console.
+     *
+     *  @param priority log level
+     *  @param message translated
+     *  @since 0.9.54
+     */
+    private void dtgNotify(int priority, String message) {
+        dtgNotify(priority, message, null);
+    }
+
+    /**
+     *  Send a notification to the user via desktopgui and,
+     *  if standalone, on the console.
+     *
+     *  @param priority log level
+     *  @param message translated
+     *  @param path in console for more information, starting with /, must be URL-escaped, or null
+     *  @since 0.9.54
+     */
+    private void dtgNotify(int priority, String message, String path) {
+        ClientAppManager cmgr = _context.clientAppManager();
+        if (cmgr != null) {
+            NotificationService ns = (NotificationService) cmgr.getRegisteredApp("desktopgui");
+            if (ns != null)
+                ns.notify("I2PSnark", null, priority, _t("I2PSnark"), message, path);
+        }
+        if (!_context.isRouterContext())
+            System.out.println(message);
+    }
+
     /**
      * An HTML link to the file if complete and a single file,
      * to the directory if not complete or not a single file,
diff --git a/apps/i2psnark/java/src/org/klomp/snark/standalone/RunStandalone.java b/apps/i2psnark/java/src/org/klomp/snark/standalone/RunStandalone.java
index 3b0ca2e50..a2a6d6f6a 100644
--- a/apps/i2psnark/java/src/org/klomp/snark/standalone/RunStandalone.java
+++ b/apps/i2psnark/java/src/org/klomp/snark/standalone/RunStandalone.java
@@ -1,5 +1,6 @@
 package org.klomp.snark.standalone;
 
+import java.awt.GraphicsEnvironment;
 import java.io.File;
 import java.io.IOException;
 import java.util.Properties;
@@ -9,8 +10,10 @@ import org.eclipse.jetty.util.log.Log;
 import net.i2p.I2PAppContext;
 import net.i2p.apps.systray.UrlLauncher;
 import net.i2p.data.DataHelper;
+import net.i2p.desktopgui.ExternalMain;
 import net.i2p.jetty.I2PLogger;
 import net.i2p.jetty.JettyStart;
+import net.i2p.util.SystemVersion;
 
 /**
  *  @since moved from ../web and fixed in 0.9.27
@@ -23,6 +26,7 @@ public class RunStandalone {
     private String _host = "127.0.0.1";
     private static RunStandalone _instance;
     static final File APP_CONFIG_FILE = new File("i2psnark-appctx.config");
+    private static final String PROP_DTG_ENABLED = "desktopgui.enabled";
 
     private RunStandalone(String args[]) throws Exception {
         Properties p = new Properties();
@@ -68,6 +72,7 @@ public class RunStandalone {
         try {
             String url = "http://" + _host + ':' + _port + "/i2psnark/";
             System.out.println("Starting i2psnark at " + url);
+            startTrayApp();
             _jettyStart.startup();
             try {
                Thread.sleep(1000);
@@ -93,4 +98,39 @@ public class RunStandalone {
         } catch (InterruptedException ie) {}
         System.exit(1);
     }
+
+    /**
+     *  @since 0.9.54 adapted from RouterConsoleRunner
+     */
+    private static boolean isSystrayEnabled(I2PAppContext context) {
+        if (GraphicsEnvironment.isHeadless())
+            return false;
+        // default false except on OSX and Windows,
+        // and on Linux KDE and LXDE.
+        // Xubuntu XFCE works but doesn't look very good
+        // Ubuntu Unity was far too buggy to enable
+        // Ubuntu GNOME does not work, SystemTray.isSupported() returns false
+        String xdg = System.getenv("XDG_CURRENT_DESKTOP");
+        boolean dflt = SystemVersion.isWindows() ||
+                       SystemVersion.isMac() ||
+                       //"XFCE".equals(xdg) ||
+                       "KDE".equals(xdg) ||
+                       "LXDE".equals(xdg);
+        return context.getProperty(PROP_DTG_ENABLED, dflt);
+    }
+
+    /**
+     *  @since 0.9.54 adapted from RouterConsoleRunner
+     */
+    private void startTrayApp() {
+        try {
+            if (isSystrayEnabled(_context)) {
+                System.setProperty("java.awt.headless", "false");
+                ExternalMain dtg = new ExternalMain(_context, _context.clientAppManager(), null);
+                dtg.startup();
+            }
+        } catch (Throwable t) {
+            t.printStackTrace();
+        }
+    }
 }
diff --git a/build.xml b/build.xml
index 0a39a1a89..39e10549f 100644
--- a/build.xml
+++ b/build.xml
@@ -342,7 +342,8 @@
         <copy file="apps/i2pcontrol/build/jsonrpc.war" todir="build/" />
     </target>
 
-    <target name="buildI2PSnark" depends="buildMinistreaming, buildJetty, buildSystray" >
+    <!-- DTG only for standalone, but snark compiles standalone classes for non-standalone, to be fixed -->
+    <target name="buildI2PSnark" depends="buildMinistreaming, buildJetty, buildSystray, buildDesktopGui" >
         <ant dir="apps/i2psnark/java/" target="war" />
         <copy file="apps/i2psnark/i2psnark.war" todir="build/" />
         <copy file="apps/i2psnark/java/build/i2psnark.jar" todir="build/" />
@@ -2132,7 +2133,7 @@
     </target> -->
 
     <!-- standalone i2psnark zip -->
-    <target name="i2psnark" depends="buildStreaming, buildJetty, buildSystray, jbigi" >
+    <target name="i2psnark" depends="buildStreaming, buildJetty, buildSystray, jbigi, buildDesktopGui" >
         <ant dir="apps/i2psnark/java" target="standalone" />
         <copy file="apps/i2psnark/java/i2psnark-standalone.zip" todir="." />
     </target>
diff --git a/history.txt b/history.txt
index e1507ff39..ad864ca31 100644
--- a/history.txt
+++ b/history.txt
@@ -1,3 +1,12 @@
+2022-03-11 zzz
+ * i2psnark standalone: Add DTG
+
+2022-03-10 zzz
+ * SSU2: Fixes
+
+2022-03-09 zzz
+ * DTG: Add new ExternalMain class for app context use
+
 2022-03-08 zzz
  * I2NP: Fix TunnelGatewayMessage.calculateWrittenLength()
  * SSU2: Fixes
diff --git a/router/java/src/net/i2p/router/RouterVersion.java b/router/java/src/net/i2p/router/RouterVersion.java
index 9bc4388a0..f2424bd3b 100644
--- a/router/java/src/net/i2p/router/RouterVersion.java
+++ b/router/java/src/net/i2p/router/RouterVersion.java
@@ -18,7 +18,7 @@ public class RouterVersion {
     /** deprecated */
     public final static String ID = "Git";
     public final static String VERSION = CoreVersion.VERSION;
-    public final static long BUILD = 5;
+    public final static long BUILD = 6;
 
     /** for example "-test" */
     public final static String EXTRA = "";