diff --git a/twin/KWinInterface.h b/twin/KWinInterface.h
index 4eb7948fe..34e35a5bd 100644
--- a/twin/KWinInterface.h
+++ b/twin/KWinInterface.h
@@ -29,6 +29,9 @@ class KWinInterface : virtual public DCOPObject
     virtual void circulateDesktopApplications() = 0;
     virtual void updateOverlappingShadows(unsigned long window) = 0;
     virtual void setShadowed(unsigned long window, bool shadowed) = 0;
+    virtual void tileHorizontally(unsigned long w1, unsigned long w2) = 0;
+    virtual void tileVertically(unsigned long w1, unsigned long w2) = 0;
+    virtual void tileGrid(unsigned long w1, unsigned long w2, unsigned long w3, unsigned long w4) = 0;
 
     // kompmgr stuff
     virtual void startKompmgr() = 0;
diff --git a/twin/client.h b/twin/client.h
index 944b837f6..30cf7bc8d 100644
--- a/twin/client.h
+++ b/twin/client.h
@@ -240,6 +240,7 @@ class Client : public TQObject, public KDecorationDefines
         void cancelActiveBorderMaximizing();
         bool isActiveBorderMaximizing() const;
         TQRect activeBorderMaximizeGeometry();
+        void tile(ActiveBorder border);
 
         void growHorizontal();
         void shrinkHorizontal();
diff --git a/twin/geometry.cpp b/twin/geometry.cpp
index f729c702c..34117da20 100644
--- a/twin/geometry.cpp
+++ b/twin/geometry.cpp
@@ -2828,4 +2828,16 @@ TQRect Client::activeBorderMaximizeGeometry()
     return ret;
 }
 
+void Client::tile(ActiveBorder border) {
+    if (!isResizable()) return;
+    activeTiled = true;
+    setActiveBorderMode(ActiveTilingMode);
+    setActiveBorder(border);
+    TQRect geo = activeBorderMaximizeGeometry();
+    if (geo.isValid() && !geo.isEmpty()) {
+        setGeometry(geo);
+    }
+    workspace()->raiseClient(this);
+}
+
 } // namespace
diff --git a/twin/useractions.cpp b/twin/useractions.cpp
index ac017aacf..e22b63af0 100644
--- a/twin/useractions.cpp
+++ b/twin/useractions.cpp
@@ -664,6 +664,44 @@ void Workspace::showWindowMenu( unsigned long window )
         }
     }
 
+void Workspace::tileHorizontally(unsigned long w1, unsigned long w2) {
+    if (w1 == w2) return;
+
+    Client *c1 = findClient(WindowMatchPredicate((WId)w1));
+    Client *c2 = findClient(WindowMatchPredicate((WId)w2));
+    if (!c1 || !c2) return;
+
+    c1->tile(ActiveTop);
+    c2->tile(ActiveBottom);
+}
+
+void Workspace::tileVertically(unsigned long w1, unsigned long w2) {
+    if (w1 == w2) return;
+
+    Client *c1 = findClient(WindowMatchPredicate((WId)w1));
+    Client *c2 = findClient(WindowMatchPredicate((WId)w2));
+    if (!c1 || !c2) return;
+
+    c1->tile(ActiveLeft);
+    c2->tile(ActiveRight);
+}
+
+void Workspace::tileGrid(unsigned long w1, unsigned long w2, unsigned long w3, unsigned long w4) {
+    if (w1 == w2 || w1 == w3 || w1 == w4 || w2 == w3 || w2 == w4 || w3 == w4)
+        return;
+
+    Client *c1 = findClient(WindowMatchPredicate((WId)w1));
+    Client *c2 = findClient(WindowMatchPredicate((WId)w2));
+    Client *c3 = findClient(WindowMatchPredicate((WId)w3));
+    Client *c4 = findClient(WindowMatchPredicate((WId)w4));
+    if (!c1 || !c2 || !c3 || !c4) return;
+
+    c1->tile(ActiveTopLeft);
+    c2->tile(ActiveTopRight);
+    c3->tile(ActiveBottomLeft);
+    c4->tile(ActiveBottomRight);
+}
+
 void Workspace::slotActivateAttentionWindow()
     {
     if( attention_chain.count() > 0 )
diff --git a/twin/workspace.h b/twin/workspace.h
index 954ea5191..b6f97f1a8 100644
--- a/twin/workspace.h
+++ b/twin/workspace.h
@@ -206,6 +206,10 @@ class Workspace : public TQObject, public KWinInterface, public KDecorationDefin
 
         void showWindowMenuAt( unsigned long id, int x, int y );
         void showWindowMenu( unsigned long id );
+
+        void tileHorizontally(unsigned long w1, unsigned long w2);
+        void tileVertically(unsigned long w1, unsigned long w2);
+        void tileGrid(unsigned long w1, unsigned long w2, unsigned long w3, unsigned long w4);
         void kDestopResized();
 
         /**