diff --git a/src/AbpDesk/Web_PlugIns/AbpDesk.MongoBlog.dll b/src/AbpDesk/Web_PlugIns/AbpDesk.MongoBlog.dll
index 8eeb6eab29..f7ed13b4ce 100644
Binary files a/src/AbpDesk/Web_PlugIns/AbpDesk.MongoBlog.dll and b/src/AbpDesk/Web_PlugIns/AbpDesk.MongoBlog.dll differ
diff --git a/src/Volo.Abp/System/ComparableExtensions.cs b/src/Volo.Abp/System/AbpComparableExtensions.cs
similarity index 93%
rename from src/Volo.Abp/System/ComparableExtensions.cs
rename to src/Volo.Abp/System/AbpComparableExtensions.cs
index f16904047a..c708231b97 100644
--- a/src/Volo.Abp/System/ComparableExtensions.cs
+++ b/src/Volo.Abp/System/AbpComparableExtensions.cs
@@ -5,7 +5,7 @@ namespace Volo.ExtensionMethods
     /// <summary>
     /// Extension methods for <see cref="IComparable{T}"/>.
     /// </summary>
-    public static class ComparableExtensions
+    public static class AbpComparableExtensions
     {
         /// <summary>
         /// Checks a value is between a minimum and maximum value.
diff --git a/src/Volo.Abp/System/DayOfWeekExtensions.cs b/src/Volo.Abp/System/AbpDayOfWeekExtensions.cs
similarity index 85%
rename from src/Volo.Abp/System/DayOfWeekExtensions.cs
rename to src/Volo.Abp/System/AbpDayOfWeekExtensions.cs
index 9bf633bcdc..ee954ea67d 100644
--- a/src/Volo.Abp/System/DayOfWeekExtensions.cs
+++ b/src/Volo.Abp/System/AbpDayOfWeekExtensions.cs
@@ -3,9 +3,9 @@
 namespace Volo.ExtensionMethods
 {
     /// <summary>
-    /// Extension methods for <see cref="DayOfWeekExtensions"/>.
+    /// Extension methods for <see cref="AbpDayOfWeekExtensions"/>.
     /// </summary>
-    public static class DayOfWeekExtensions
+    public static class AbpDayOfWeekExtensions
     {
         /// <summary>
         /// Check if given <see cref="DayOfWeek"/> value is weekend.
diff --git a/src/Volo.Abp/System/EventHandlerExtensions.cs b/src/Volo.Abp/System/AbpEventHandlerExtensions.cs
similarity index 96%
rename from src/Volo.Abp/System/EventHandlerExtensions.cs
rename to src/Volo.Abp/System/AbpEventHandlerExtensions.cs
index e0247d68ea..459c405d7a 100644
--- a/src/Volo.Abp/System/EventHandlerExtensions.cs
+++ b/src/Volo.Abp/System/AbpEventHandlerExtensions.cs
@@ -5,7 +5,7 @@ namespace Volo.ExtensionMethods
     /// <summary>
     /// Extension methods for <see cref="EventHandler"/>.
     /// </summary>
-    public static class EventHandlerExtensions
+    public static class AbpEventHandlerExtensions
     {
         /// <summary>
         /// Raises given event safely with given arguments.
diff --git a/src/Volo.Abp/System/ExceptionExtensions.cs b/src/Volo.Abp/System/AbpExceptionExtensions.cs
similarity index 92%
rename from src/Volo.Abp/System/ExceptionExtensions.cs
rename to src/Volo.Abp/System/AbpExceptionExtensions.cs
index e7ba296b41..be677b91da 100644
--- a/src/Volo.Abp/System/ExceptionExtensions.cs
+++ b/src/Volo.Abp/System/AbpExceptionExtensions.cs
@@ -6,7 +6,7 @@ namespace Volo.ExtensionMethods
     /// <summary>
     /// Extension methods for <see cref="Exception"/> class.
     /// </summary>
-    public static class ExceptionExtensions
+    public static class AbpExceptionExtensions
     {
         /// <summary>
         /// Uses <see cref="ExceptionDispatchInfo.Capture"/> method to re-throws exception
diff --git a/src/Volo.Abp/System/ObjectExtensions.cs b/src/Volo.Abp/System/AbpObjectExtensions.cs
similarity index 97%
rename from src/Volo.Abp/System/ObjectExtensions.cs
rename to src/Volo.Abp/System/AbpObjectExtensions.cs
index 3b8190bb6b..80e16e25c6 100644
--- a/src/Volo.Abp/System/ObjectExtensions.cs
+++ b/src/Volo.Abp/System/AbpObjectExtensions.cs
@@ -7,7 +7,7 @@ namespace Volo.ExtensionMethods
     /// <summary>
     /// Extension methods for all objects.
     /// </summary>
-    public static class ObjectExtensions
+    public static class AbpObjectExtensions
     {
         /// <summary>
         /// Used to simplify and beautify casting an object to a type. 
diff --git a/src/Volo.Abp/System/StringExtensions.cs b/src/Volo.Abp/System/AbpStringExtensions.cs
similarity index 99%
rename from src/Volo.Abp/System/StringExtensions.cs
rename to src/Volo.Abp/System/AbpStringExtensions.cs
index a2878fbf0d..b960ee218a 100644
--- a/src/Volo.Abp/System/StringExtensions.cs
+++ b/src/Volo.Abp/System/AbpStringExtensions.cs
@@ -9,7 +9,7 @@ namespace Volo.ExtensionMethods
     /// <summary>
     /// Extension methods for String class.
     /// </summary>
-    public static class StringExtensions
+    public static class AbpStringExtensions
     {
         /// <summary>
         /// Adds a char to end of given string if it does not ends with the char.
diff --git a/src/Volo.Abp/System/TypeExtensions.cs b/src/Volo.Abp/System/AbpTypeExtensions.cs
similarity index 81%
rename from src/Volo.Abp/System/TypeExtensions.cs
rename to src/Volo.Abp/System/AbpTypeExtensions.cs
index f24dfb562b..4440bfb9cf 100644
--- a/src/Volo.Abp/System/TypeExtensions.cs
+++ b/src/Volo.Abp/System/AbpTypeExtensions.cs
@@ -2,7 +2,7 @@
 
 namespace System
 {
-    public static class TypeExtensions
+    public static class AbpTypeExtensions
     {
         public static Assembly GetAssembly(this Type type)
         {
diff --git a/src/Volo.Abp/System/Collections/Generic/CollectionExtensions.cs b/src/Volo.Abp/System/Collections/Generic/AbpCollectionExtensions.cs
similarity index 96%
rename from src/Volo.Abp/System/Collections/Generic/CollectionExtensions.cs
rename to src/Volo.Abp/System/Collections/Generic/AbpCollectionExtensions.cs
index db560d1b06..66693d266c 100644
--- a/src/Volo.Abp/System/Collections/Generic/CollectionExtensions.cs
+++ b/src/Volo.Abp/System/Collections/Generic/AbpCollectionExtensions.cs
@@ -8,7 +8,7 @@ namespace Volo.ExtensionMethods.Collections.Generic
     /// <summary>
     /// Extension methods for Collections.
     /// </summary>
-    public static class CollectionExtensions
+    public static class AbpCollectionExtensions
     {
         /// <summary>
         /// Checks whatever given collection object is null or has no item.
diff --git a/src/Volo.Abp/System/Collections/Generic/DictionaryExtensions.cs b/src/Volo.Abp/System/Collections/Generic/AbpDictionaryExtensions.cs
similarity index 98%
rename from src/Volo.Abp/System/Collections/Generic/DictionaryExtensions.cs
rename to src/Volo.Abp/System/Collections/Generic/AbpDictionaryExtensions.cs
index 37727402b7..48c78a2f38 100644
--- a/src/Volo.Abp/System/Collections/Generic/DictionaryExtensions.cs
+++ b/src/Volo.Abp/System/Collections/Generic/AbpDictionaryExtensions.cs
@@ -6,7 +6,7 @@ namespace Volo.ExtensionMethods.Collections.Generic
     /// <summary>
     /// Extension methods for Dictionary.
     /// </summary>
-    public static class DictionaryExtensions
+    public static class AbpDictionaryExtensions
     {
         /// <summary>
         /// This method is used to try to get a value in a dictionary if it does exists.
diff --git a/src/Volo.Abp/System/Collections/Generic/EnumerableExtensions.cs b/src/Volo.Abp/System/Collections/Generic/AbpEnumerableExtensions.cs
similarity index 98%
rename from src/Volo.Abp/System/Collections/Generic/EnumerableExtensions.cs
rename to src/Volo.Abp/System/Collections/Generic/AbpEnumerableExtensions.cs
index 01f67130c9..edee9c15d4 100644
--- a/src/Volo.Abp/System/Collections/Generic/EnumerableExtensions.cs
+++ b/src/Volo.Abp/System/Collections/Generic/AbpEnumerableExtensions.cs
@@ -7,7 +7,7 @@ namespace Volo.ExtensionMethods.Collections.Generic
     /// <summary> 
     /// Extension methods for <see cref="IEnumerable{T}"/>.
     /// </summary>
-    public static class EnumerableExtensions
+    public static class AbpEnumerableExtensions
     {
         /// <summary>
         /// Concatenates the members of a constructed <see cref="IEnumerable{T}"/> collection of type System.String, using the specified separator between each member.
diff --git a/src/Volo.Abp/System/Collections/Generic/ListExtensions.cs b/src/Volo.Abp/System/Collections/Generic/AbpListExtensions.cs
similarity index 98%
rename from src/Volo.Abp/System/Collections/Generic/ListExtensions.cs
rename to src/Volo.Abp/System/Collections/Generic/AbpListExtensions.cs
index b2db839574..9dbbf0496d 100644
--- a/src/Volo.Abp/System/Collections/Generic/ListExtensions.cs
+++ b/src/Volo.Abp/System/Collections/Generic/AbpListExtensions.cs
@@ -8,7 +8,7 @@ namespace Volo.ExtensionMethods.Collections.Generic
     /// <summary>
     /// Extension methods for <see cref="IList{T}"/>.
     /// </summary>
-    public static class ListExtensions
+    public static class AbpListExtensions
     {
         public static void MoveItem<T>(this List<T> source, Predicate<T> selector, int targetIndex)
         {
diff --git a/src/Volo.Abp/System/Globalization/CultureHelper.cs b/src/Volo.Abp/System/Globalization/AbpCultureHelper.cs
similarity index 96%
rename from src/Volo.Abp/System/Globalization/CultureHelper.cs
rename to src/Volo.Abp/System/Globalization/AbpCultureHelper.cs
index 8f7e3be667..c42e0e2091 100644
--- a/src/Volo.Abp/System/Globalization/CultureHelper.cs
+++ b/src/Volo.Abp/System/Globalization/AbpCultureHelper.cs
@@ -4,7 +4,7 @@ using Volo.Abp;
 
 namespace System.Globalization
 {
-    public static class CultureHelper
+    public static class AbpCultureHelper
     {
         public static IDisposable Use([NotNull] string culture, string uiCulture = null)
         {
diff --git a/src/Volo.Abp/System/IO/StreamExtensions.cs b/src/Volo.Abp/System/IO/AbpStreamExtensions.cs
similarity index 88%
rename from src/Volo.Abp/System/IO/StreamExtensions.cs
rename to src/Volo.Abp/System/IO/AbpStreamExtensions.cs
index 96df44a41c..e8f05cece9 100644
--- a/src/Volo.Abp/System/IO/StreamExtensions.cs
+++ b/src/Volo.Abp/System/IO/AbpStreamExtensions.cs
@@ -2,7 +2,7 @@
 
 namespace Volo.ExtensionMethods
 {
-    public static class StreamExtensions
+    public static class AbpStreamExtensions
     {
         public static byte[] GetAllBytes(this Stream stream)
         {
diff --git a/test/Volo.Abp.Tests/Volo/ExtensionMethods/StringExtensions_Tests.cs b/test/Volo.Abp.Tests/Volo/ExtensionMethods/StringExtensions_Tests.cs
index 41788436fd..6d0b740a7a 100644
--- a/test/Volo.Abp.Tests/Volo/ExtensionMethods/StringExtensions_Tests.cs
+++ b/test/Volo.Abp.Tests/Volo/ExtensionMethods/StringExtensions_Tests.cs
@@ -11,7 +11,7 @@ namespace Volo.ExtensionMethods
 
         public StringExtensions_Tests()
         {
-            _cultureScope = CultureHelper.Use("en-US");
+            _cultureScope = AbpCultureHelper.Use("en-US");
         }
 
         [Fact]
@@ -31,7 +31,7 @@ namespace Volo.ExtensionMethods
         [Fact]
         public void EnsureEndsWith_CultureSpecific_Test()
         {
-            using (CultureHelper.Use("tr-TR"))
+            using (AbpCultureHelper.Use("tr-TR"))
             {
                 "Kırmızı".EnsureEndsWith('I', StringComparison.CurrentCultureIgnoreCase).ShouldBe("Kırmızı");
             }
@@ -59,7 +59,7 @@ namespace Volo.ExtensionMethods
         [Fact]
         public void ToPascalCase_CurrentCulture_Test()
         {
-            using (CultureHelper.Use("tr-TR"))
+            using (AbpCultureHelper.Use("tr-TR"))
             {
                 "istanbul".ToPascalCase(true).ShouldBe("İstanbul");
             }