diff --git a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/Credentials.java b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/Credentials.java
index 023bef8..abeec63 100644
--- a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/Credentials.java
+++ b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/Credentials.java
@@ -41,6 +41,13 @@ import java.io.Serializable;
 import javax.enterprise.context.RequestScoped;
 import javax.inject.Named;
 
+/**
+ * This classes keeps credential informations, username and password.
+ * 
+ * @author SERPRO
+ * 
+ */
+
 @Named
 @RequestScoped
 public class Credentials implements Serializable {
@@ -51,6 +58,9 @@ public class Credentials implements Serializable {
 
 	private String password;
 
+	/**
+	 * Cleans the stored information, setting username and password to null.
+	 */
 	public void clear() {
 		this.username = null;
 		this.password = null;
diff --git a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthenticator.java b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthenticator.java
index aea5cb2..357a47a 100644
--- a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthenticator.java
+++ b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthenticator.java
@@ -48,6 +48,14 @@ import br.gov.frameworkdemoiselle.util.Beans;
 import br.gov.frameworkdemoiselle.util.NameQualifier;
 import br.gov.frameworkdemoiselle.util.ResourceBundle;
 
+/**
+ * Implements the {@link Authenticator} interface, offering a way to implement 
+ * offering a manner to use the authenticator's functionalities.
+ * 
+ * @author SERPRO
+ *
+ */
+
 @Priority(L2_PRIORITY)
 public class ServletAuthenticator implements Authenticator {
 
diff --git a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthorizer.java b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthorizer.java
index 0e82e27..76f6a48 100644
--- a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthorizer.java
+++ b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/security/ServletAuthorizer.java
@@ -46,6 +46,14 @@ import br.gov.frameworkdemoiselle.internal.producer.ResourceBundleProducer;
 import br.gov.frameworkdemoiselle.util.Beans;
 import br.gov.frameworkdemoiselle.util.ResourceBundle;
 
+/**
+ * Implements the {@link Authorizer} interface, offering a way to implement 
+ * offering a manner to use the authorizer's functionalities.
+ * 
+ * @author SERPRO
+ *
+ */
+
 @Priority(L2_PRIORITY)
 public class ServletAuthorizer implements Authorizer {
 
diff --git a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletFilter.java b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletFilter.java
index 1e20497..a376a46 100644
--- a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletFilter.java
+++ b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletFilter.java
@@ -45,6 +45,13 @@ import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 
+/**
+ * Implements the {@link javax.servlet.Filter} interface.
+ * 
+ * @author SERPRO
+ *
+ */
+
 public class ServletFilter implements Filter {
 
 	@Override
diff --git a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletListener.java b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletListener.java
index 911cf99..216ea4d 100644
--- a/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletListener.java
+++ b/impl/extension/servlet/src/main/java/br/gov/frameworkdemoiselle/util/ServletListener.java
@@ -41,6 +41,14 @@ import javax.servlet.ServletContextEvent;
 import br.gov.frameworkdemoiselle.lifecycle.AfterShutdownProccess;
 import br.gov.frameworkdemoiselle.lifecycle.AfterStartupProccess;
 
+/**
+ * Implements the {@link javax.servlet.ServletContextListener} interface, and fire two events: 
+ * {@link AfterStartupProccess} and {@link AfterShutdownProccess}.
+ * 
+ * @author SERPRO
+ *
+ */
+
 public class ServletListener implements javax.servlet.ServletContextListener {
 
 	@Override
--
libgit2 0.21.2