diff --git a/mdeforge/src/main/java/org/mdeforge/business/UserService.java b/mdeforge/src/main/java/org/mdeforge/business/UserService.java
index a7aacd68..9449920c 100644
--- a/mdeforge/src/main/java/org/mdeforge/business/UserService.java
+++ b/mdeforge/src/main/java/org/mdeforge/business/UserService.java
@@ -32,4 +32,6 @@ public interface UserService {
 	User findOneByUsername(String username) throws BusinessException;
 
 	User findOneByEmail(String email) throws BusinessException;
+
+	List<User> findByUsernameContaining(String name);
 }
\ No newline at end of file
diff --git a/mdeforge/src/main/java/org/mdeforge/business/impl/UserServiceImpl.java b/mdeforge/src/main/java/org/mdeforge/business/impl/UserServiceImpl.java
index 639c22b6..5643ba15 100644
--- a/mdeforge/src/main/java/org/mdeforge/business/impl/UserServiceImpl.java
+++ b/mdeforge/src/main/java/org/mdeforge/business/impl/UserServiceImpl.java
@@ -11,12 +11,19 @@
 import org.mdeforge.integration.UserRepository;
 import org.mdeforge.integration.VerificationTokenRepository;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.mongodb.core.MongoOperations;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.data.mongodb.core.SimpleMongoDbFactory;
+import org.springframework.data.mongodb.core.query.Criteria;
+import org.springframework.data.mongodb.core.query.Query;
 import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
 import org.springframework.stereotype.Service;
 
 @Service
 public class UserServiceImpl implements UserService{
 
+	@Autowired
+	protected SimpleMongoDbFactory mongoDbFactory;
 	@Autowired
 	private UserRepository userRepository;
 	@Autowired
@@ -36,7 +43,10 @@ public User create(User user) throws BusinessException {
 		user.setPassword(new BCryptPasswordEncoder().encode(user.getPassword()));
 		return userRepository.save(user);
 	}
-
+	@Override
+	public List<User> findByUsernameContaining(String name) {
+		return userRepository.findByUsernameContaining(name);
+	}
 	
 	
 	@Override
diff --git a/mdeforge/src/main/java/org/mdeforge/integration/UserRepository.java b/mdeforge/src/main/java/org/mdeforge/integration/UserRepository.java
index d54e3bd8..a4bb78ed 100644
--- a/mdeforge/src/main/java/org/mdeforge/integration/UserRepository.java
+++ b/mdeforge/src/main/java/org/mdeforge/integration/UserRepository.java
@@ -1,5 +1,7 @@
 package org.mdeforge.integration;
 
+import java.util.List;
+
 import org.mdeforge.business.model.User;
 import org.springframework.data.mongodb.repository.MongoRepository;
 
@@ -7,5 +9,6 @@ public interface UserRepository extends MongoRepository<User,String>{
 	User findByUsernameAndEnabled(String username, boolean enabled);
 	User findByUsername(String username);
 	User findByEmail(String email);
+	List<User> findByUsernameContaining(String name);
 
 }
diff --git a/mdeforge/src/main/java/org/mdeforge/presentation/frontend/PublicController.java b/mdeforge/src/main/java/org/mdeforge/presentation/frontend/PublicController.java
index a69e37de..67fb1cf8 100644
--- a/mdeforge/src/main/java/org/mdeforge/presentation/frontend/PublicController.java
+++ b/mdeforge/src/main/java/org/mdeforge/presentation/frontend/PublicController.java
@@ -12,6 +12,7 @@
 import org.mdeforge.business.model.ATLTransformation;
 import org.mdeforge.business.model.Artifact;
 import org.mdeforge.business.model.EcoreMetamodel;
+import org.mdeforge.business.model.User;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
@@ -62,11 +63,16 @@ public String publications() {
 	public String login() {
 		return "public.login";
 	}
-	@RequestMapping(value = "/exist_user", method = { RequestMethod.GET })
+	@RequestMapping(value = "/user/search", method = { RequestMethod.GET })
+	public @ResponseBody List<User> searchUsers(@RequestParam("username") String username){
+		return (userService.findByUsernameContaining(username));
+	}
+	
+	@RequestMapping(value = "/user/exist_username", method = { RequestMethod.GET })
 	public @ResponseBody boolean existUser(@RequestParam("username") String username){
 		return (userService.findOneByUsername(username)==null)?false:true;
 	}
-	@RequestMapping(value = "/exist_mail", method = { RequestMethod.GET })
+	@RequestMapping(value = "/user/exist_email", method = { RequestMethod.GET })
 	public @ResponseBody boolean existEmail(@RequestParam("email") String email){
 		return (userService.findOneByEmail(email)==null)?false:true;
 	}