diff --git a/CMakeLists.txt b/CMakeLists.txt
index fd43e91..5ddef71 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -39,26 +39,6 @@ else()
     add_library(promise STATIC ${my_sources} ${my_headers})
 endif()
 
-
-add_executable(test0 ${my_headers} example/test0.cpp)
-target_link_libraries(test0 PRIVATE promise)
-
-add_executable(simple_timer ${my_headers} example/simple_timer.cpp)
-target_link_libraries(simple_timer PRIVATE promise)
-
-add_executable(simple_benchmark_test ${my_headers} example/simple_benchmark_test.cpp)
-target_link_libraries(simple_benchmark_test PRIVATE promise)
-
-find_package(Threads)
-if(Threads_FOUND)
-    add_executable(multithread_test ${my_headers} example/multithread_test.cpp)
-    target_link_libraries(multithread_test PRIVATE promise Threads::Threads)
-endif()
-
-add_executable(chain_defer_test ${my_headers} example/chain_defer_test.cpp)
-target_link_libraries(chain_defer_test PRIVATE promise)
-
-
 find_package(Boost)
 if(NOT Boost_FOUND)
     message(WARNING "Boost not found, so asio projects will not be compiled")
@@ -70,40 +50,4 @@ else()
     endif (UNIX)
 
     include_directories(. ./add_ons/asio)
-    
-    add_executable(asio_benchmark_test ${my_headers} example/asio_benchmark_test.cpp)
-    target_compile_definitions(asio_benchmark_test PRIVATE BOOST_ALL_NO_LIB)  
-    target_link_libraries(asio_benchmark_test PRIVATE promise)
-
-    add_executable(asio_timer ${my_headers} example/asio_timer.cpp)
-    target_compile_definitions(asio_timer PRIVATE BOOST_ALL_NO_LIB)  
-    target_link_libraries(asio_timer PRIVATE promise)
-
-    add_executable(asio_http_client ${my_headers} example/asio_http_client.cpp)
-    target_compile_definitions(asio_http_client PRIVATE BOOST_ALL_NO_LIB)  
-    target_link_libraries(asio_http_client PRIVATE promise)
-
-    add_executable(asio_http_server ${my_headers} example/asio_http_server.cpp)
-    target_compile_definitions(asio_http_server PRIVATE BOOST_ALL_NO_LIB)  
-    target_link_libraries(asio_http_server PRIVATE promise)
-endif()
-
-
-find_package(QT NAMES Qt6 Qt5 COMPONENTS Widgets)
-find_package(Qt${QT_VERSION_MAJOR} COMPONENTS Widgets)
-if(NOT QT_DIR)
-    message(WARNING "QT not found, so project qt_timer will not be compiled")
-else()
-    if(PROMISE_BUILD_SHARED OR BUILD_SHARED_LIBS)
-        add_library(promise_qt SHARED ./add_ons/qt/promise_qt.cpp ${my_headers})
-    else()
-        add_library(promise_qt STATIC ./add_ons/qt/promise_qt.cpp ${my_headers})
-    endif()
-    target_link_libraries(promise_qt PRIVATE promise Qt${QT_VERSION_MAJOR}::Widgets)
-    
-    add_subdirectory(./example/qt_timer)
-endif()
-
-if(MSVC)
-    add_subdirectory(./example/mfc_timer)
 endif()