diff --git a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherProcess.java b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherProcess.java
index a1211037..a1c7ad02 100644
--- a/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherProcess.java
+++ b/Launcher/src/main/java/pro/gravit/launcher/client/ClientLauncherProcess.java
@@ -3,8 +3,10 @@
 import pro.gravit.launcher.Launcher;
 import pro.gravit.launcher.LauncherEngine;
 import pro.gravit.launcher.LauncherNetworkAPI;
-import pro.gravit.launcher.guard.LauncherGuardInterface;
-import pro.gravit.launcher.guard.LauncherGuardManager;
+import pro.gravit.launcher.client.events.client.ClientProcessBuilderCreateEvent;
+import pro.gravit.launcher.client.events.client.ClientProcessBuilderLaunchedEvent;
+import pro.gravit.launcher.client.events.client.ClientProcessBuilderParamsWrittedEvent;
+import pro.gravit.launcher.client.events.client.ClientProcessBuilderPreLaunchEvent;
 import pro.gravit.launcher.hasher.HashedDir;
 import pro.gravit.launcher.profiles.ClientProfile;
 import pro.gravit.launcher.profiles.PlayerProfile;
@@ -13,10 +15,7 @@
 import pro.gravit.utils.Version;
 import pro.gravit.utils.helper.*;
 
-import java.io.ByteArrayOutputStream;
 import java.io.IOException;
-import java.io.OutputStream;
-import java.net.InetSocketAddress;
 import java.net.ServerSocket;
 import java.net.Socket;
 import java.net.SocketAddress;
@@ -87,6 +86,7 @@ private void applyClientProfile()
             this.jvmArgs.add("-Xmx" + params.ram + 'M');
         }
         this.params.session = Request.getSession();
+        LauncherEngine.modulesManager.invokeEvent(new ClientProcessBuilderCreateEvent(this));
     }
 
 
@@ -215,6 +215,7 @@ private void addModernClientArgs(Collection<String> args) {
     public void start(boolean pipeOutput) throws IOException, InterruptedException {
         if(isStarted) throw new IllegalStateException("Process already started");
         if(LauncherEngine.guard != null) LauncherEngine.guard.applyGuardParams(this);
+        LauncherEngine.modulesManager.invokeEvent(new ClientProcessBuilderPreLaunchEvent(this));
         List<String> processArgs = new LinkedList<>();
         processArgs.add(executeFile.toString());
         processArgs.addAll(jvmArgs);
@@ -243,6 +244,7 @@ public void start(boolean pipeOutput) throws IOException, InterruptedException {
             processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE);
         }
         process = processBuilder.start();
+        LauncherEngine.modulesManager.invokeEvent(new ClientProcessBuilderLaunchedEvent(this));
         isStarted = true;
     }
     public void runWriteParams(SocketAddress address) throws IOException
@@ -265,6 +267,7 @@ public void runWriteParams(SocketAddress address) throws IOException
                 params.javaHDir.write(output);
             }
         }
+        LauncherEngine.modulesManager.invokeEvent(new ClientProcessBuilderParamsWrittedEvent(this));
     }
 
     public Process getProcess() {
diff --git a/Launcher/src/main/java/pro/gravit/launcher/client/events/client/ClientProcessBuilderParamsWrittedEvent.java b/Launcher/src/main/java/pro/gravit/launcher/client/events/client/ClientProcessBuilderParamsWrittedEvent.java
new file mode 100644
index 00000000..bb535568
--- /dev/null
+++ b/Launcher/src/main/java/pro/gravit/launcher/client/events/client/ClientProcessBuilderParamsWrittedEvent.java
@@ -0,0 +1,12 @@
+package pro.gravit.launcher.client.events.client;
+
+import pro.gravit.launcher.client.ClientLauncherProcess;
+import pro.gravit.launcher.modules.LauncherModule;
+
+public class ClientProcessBuilderParamsWrittedEvent extends LauncherModule.Event {
+    public final ClientLauncherProcess process;
+
+    public ClientProcessBuilderParamsWrittedEvent(ClientLauncherProcess process) {
+        this.process = process;
+    }
+}
diff --git a/LauncherAPI/src/main/java/pro/gravit/launcher/request/websockets/StdWebSocketService.java b/LauncherAPI/src/main/java/pro/gravit/launcher/request/websockets/StdWebSocketService.java
index dfb5eecf..0987f911 100644
--- a/LauncherAPI/src/main/java/pro/gravit/launcher/request/websockets/StdWebSocketService.java
+++ b/LauncherAPI/src/main/java/pro/gravit/launcher/request/websockets/StdWebSocketService.java
@@ -25,6 +25,10 @@ public void registerEventHandler(EventHandler handler)
     {
         eventHandlers.add(handler);
     }
+    public void unregisterEventHandler(EventHandler handler)
+    {
+        eventHandlers.remove(handler);
+    }
     public<T extends WebSocketEvent> void processEventHandlers(T event)
     {
         for(EventHandler handler : eventHandlers)