diff --git a/Backend/tools-services/src/main/java/com/r11/tools/controller/XPathController.java b/Backend/tools-services/src/main/java/com/r11/tools/controller/XPathController.java
index dbf3840..aabd6a7 100644
--- a/Backend/tools-services/src/main/java/com/r11/tools/controller/XPathController.java
+++ b/Backend/tools-services/src/main/java/com/r11/tools/controller/XPathController.java
@@ -11,6 +11,7 @@ import spark.Request;
 import spark.Response;
 
 @GlobalControllerManifest
+@Deprecated
 public class XPathController implements RestController {
 
     private final Gson gson;
diff --git a/Backend/tools-services/src/main/java/com/r11/tools/controller/XQueryController.java b/Backend/tools-services/src/main/java/com/r11/tools/controller/XQueryController.java
index 59bec6a..8254f61 100644
--- a/Backend/tools-services/src/main/java/com/r11/tools/controller/XQueryController.java
+++ b/Backend/tools-services/src/main/java/com/r11/tools/controller/XQueryController.java
@@ -14,6 +14,7 @@ import spark.Response;
  * @author Adam Bem
  */
 @GlobalControllerManifest
+@Deprecated
 public class XQueryController implements RestController {
 
     private final Gson gson;
diff --git a/Backend/tools-services/src/main/java/com/r11/tools/controller/XmlController.java b/Backend/tools-services/src/main/java/com/r11/tools/controller/XmlController.java
index b5ba958..20033fe 100644
--- a/Backend/tools-services/src/main/java/com/r11/tools/controller/XmlController.java
+++ b/Backend/tools-services/src/main/java/com/r11/tools/controller/XmlController.java
@@ -11,6 +11,10 @@ import org.apache.logging.log4j.Logger;
 import spark.Request;
 import spark.Response;
 
+/**
+ * Controller used to handle XML tools: XPath, XSD validation, XQuery and XSLT
+ * @author Adam Bem
+ */
 public class XmlController {
 
     private final Gson gson;
diff --git a/Backend/tools-services/src/main/java/com/r11/tools/controller/XsdController.java b/Backend/tools-services/src/main/java/com/r11/tools/controller/XsdController.java
index 294c6dc..b53db9f 100644
--- a/Backend/tools-services/src/main/java/com/r11/tools/controller/XsdController.java
+++ b/Backend/tools-services/src/main/java/com/r11/tools/controller/XsdController.java
@@ -10,6 +10,7 @@ import spark.Request;
 import spark.Response;
 
 @GlobalControllerManifest
+@Deprecated
 public class XsdController implements RestController {
 
     private final Gson gson;
diff --git a/Backend/tools-services/src/main/java/com/r11/tools/controller/XsltController.java b/Backend/tools-services/src/main/java/com/r11/tools/controller/XsltController.java
index a2b7e95..ef7316f 100644
--- a/Backend/tools-services/src/main/java/com/r11/tools/controller/XsltController.java
+++ b/Backend/tools-services/src/main/java/com/r11/tools/controller/XsltController.java
@@ -10,6 +10,7 @@ import spark.Request;
 import spark.Response;
 
 @GlobalControllerManifest
+@Deprecated
 public class XsltController implements RestController {
 
     private final Gson gson;