diff --git a/TODO b/TODO
index 7309acb1a..9e591af8d 100644
--- a/TODO
+++ b/TODO
@@ -64,7 +64,7 @@
         ✔ AC @started(19-12-23 12:48) @done(19-12-24 22:38) @lasted(1d9h50m3s)
         ✔ ACT @done(19-12-24 23:17)
         ✔ AM @started(19-12-24 23:17) @done(19-12-24 23:53) @lasted(36m8s)
-        ☐ APT
+        ✔ APT @done(19-12-25 21:41)
         ☐ BOSS
         ☐ CAM
         ☐ CECD
diff --git a/src/common/serialization/optional.h b/src/common/serialization/optional.h
new file mode 100644
index 000000000..5ab6af9b8
--- /dev/null
+++ b/src/common/serialization/optional.h
@@ -0,0 +1,91 @@
+#pragma once
+
+#include <boost/config.hpp>
+
+#include <boost/archive/detail/basic_iarchive.hpp>
+
+#include <optional>
+#include <boost/move/utility_core.hpp>
+
+#include <boost/serialization/item_version_type.hpp>
+#include <boost/serialization/split_free.hpp>
+#include <boost/serialization/level.hpp>
+#include <boost/serialization/nvp.hpp>
+#include <boost/serialization/version.hpp>
+#include <boost/type_traits/is_pointer.hpp>
+#include <boost/serialization/detail/stack_constructor.hpp>
+#include <boost/serialization/detail/is_default_constructible.hpp>
+#include <boost/serialization/force_include.hpp>
+
+// function specializations must be defined in the appropriate
+// namespace - boost::serialization
+namespace boost {
+namespace serialization {
+
+template<class Archive, class T>
+void save(
+    Archive & ar,
+    const std::optional< T > & t,
+    const unsigned int /*version*/
+){
+    // It is an inherent limitation to the serialization of optional.hpp
+    // that the underlying type must be either a pointer or must have a
+    // default constructor.  It's possible that this could change sometime
+    // in the future, but for now, one will have to work around it.  This can
+    // be done by serialization the optional<T> as optional<T *>
+    #if ! defined(BOOST_NO_CXX11_HDR_TYPE_TRAITS)
+        BOOST_STATIC_ASSERT(
+            boost::serialization::detail::is_default_constructible<T>::value
+            || boost::is_pointer<T>::value
+        );
+    #endif
+    const bool tflag = t.has_value();
+    ar << boost::serialization::make_nvp("initialized", tflag);
+    if (tflag){
+        ar << boost::serialization::make_nvp("value", *t);
+    }
+}
+
+template<class Archive, class T>
+void load(
+    Archive & ar,
+    std::optional< T > & t,
+    const unsigned int version
+){
+    bool tflag;
+    ar >> boost::serialization::make_nvp("initialized", tflag);
+    if(! tflag){
+        t.reset();
+        return;
+    }
+
+    if(0 == version){
+        boost::serialization::item_version_type item_version(0);
+        boost::archive::library_version_type library_version(
+            ar.get_library_version()
+        );
+        if(boost::archive::library_version_type(3) < library_version){
+            ar >> BOOST_SERIALIZATION_NVP(item_version);
+        }
+    }
+    if(! t.has_value())
+        t = T();
+    ar >> boost::serialization::make_nvp("value", *t);
+}
+
+template<class Archive, class T>
+void serialize(
+    Archive & ar,
+    std::optional< T > & t,
+    const unsigned int version
+){
+    boost::serialization::split_free(ar, t, version);
+}
+
+template<class T>
+struct version<std::optional<T> > {
+    BOOST_STATIC_CONSTANT(int, value = 1);
+};
+
+} // serialization
+} // boost
diff --git a/src/core/global.h b/src/core/global.h
index 8dfd022d8..d2e1cd97d 100644
--- a/src/core/global.h
+++ b/src/core/global.h
@@ -3,4 +3,9 @@ namespace Core {
 template <class T>
 T& Global();
 
+// Declare explicit specialisation to prevent im
+class System;
+template <>
+System& Global();
+
 } // namespace Core
diff --git a/src/core/hle/kernel/shared_memory.cpp b/src/core/hle/kernel/shared_memory.cpp
index 4cd305508..c76cdfa19 100644
--- a/src/core/hle/kernel/shared_memory.cpp
+++ b/src/core/hle/kernel/shared_memory.cpp
@@ -8,10 +8,11 @@
 #include "core/hle/kernel/memory.h"
 #include "core/hle/kernel/shared_memory.h"
 #include "core/memory.h"
+#include "core/global.h"
 
 namespace Kernel {
 
-SharedMemory::SharedMemory(KernelSystem& kernel) : Object(kernel), kernel(kernel) {}
+SharedMemory::SharedMemory() : Object(Core::Global<KernelSystem>()), kernel(Core::Global<KernelSystem>()) {}
 SharedMemory::~SharedMemory() {
     for (const auto& interval : holding_memory) {
         kernel.GetMemoryRegion(MemoryRegion::SYSTEM)
@@ -27,7 +28,7 @@ SharedMemory::~SharedMemory() {
 ResultVal<std::shared_ptr<SharedMemory>> KernelSystem::CreateSharedMemory(
     Process* owner_process, u32 size, MemoryPermission permissions,
     MemoryPermission other_permissions, VAddr address, MemoryRegion region, std::string name) {
-    auto shared_memory{std::make_shared<SharedMemory>(*this)};
+    auto shared_memory{std::make_shared<SharedMemory>()};
 
     shared_memory->owner_process = owner_process;
     shared_memory->name = std::move(name);
@@ -72,7 +73,7 @@ ResultVal<std::shared_ptr<SharedMemory>> KernelSystem::CreateSharedMemory(
 std::shared_ptr<SharedMemory> KernelSystem::CreateSharedMemoryForApplet(
     u32 offset, u32 size, MemoryPermission permissions, MemoryPermission other_permissions,
     std::string name) {
-    auto shared_memory{std::make_shared<SharedMemory>(*this)};
+    auto shared_memory{std::make_shared<SharedMemory>()};
 
     // Allocate memory in heap
     MemoryRegionInfo* memory_region = GetMemoryRegion(MemoryRegion::SYSTEM);
diff --git a/src/core/hle/kernel/shared_memory.h b/src/core/hle/kernel/shared_memory.h
index 8aaf3df1f..925f7783c 100644
--- a/src/core/hle/kernel/shared_memory.h
+++ b/src/core/hle/kernel/shared_memory.h
@@ -16,7 +16,7 @@ namespace Kernel {
 
 class SharedMemory final : public Object {
 public:
-    explicit SharedMemory(KernelSystem& kernel);
+    explicit SharedMemory();
     ~SharedMemory() override;
 
     std::string GetTypeName() const override {
diff --git a/src/core/hle/service/ac/ac_i.h b/src/core/hle/service/ac/ac_i.h
index e05bac803..8e852fb9b 100644
--- a/src/core/hle/service/ac/ac_i.h
+++ b/src/core/hle/service/ac/ac_i.h
@@ -14,7 +14,7 @@ public:
     explicit AC_I(std::shared_ptr<Module> ac);
 
 private:
-    SERVICE_SERIALIZATION(AC_I, ac)
+    SERVICE_SERIALIZATION(AC_I, ac, Module)
 };
 
 } // namespace Service::AC
diff --git a/src/core/hle/service/ac/ac_u.h b/src/core/hle/service/ac/ac_u.h
index c15870b51..117269f1f 100644
--- a/src/core/hle/service/ac/ac_u.h
+++ b/src/core/hle/service/ac/ac_u.h
@@ -14,7 +14,7 @@ public:
     explicit AC_U(std::shared_ptr<Module> ac);
 
 private:
-    SERVICE_SERIALIZATION(AC_U, ac)
+    SERVICE_SERIALIZATION(AC_U, ac, Module)
 };
 
 } // namespace Service::AC
diff --git a/src/core/hle/service/act/act_a.h b/src/core/hle/service/act/act_a.h
index 036a96182..1e37c9bde 100644
--- a/src/core/hle/service/act/act_a.h
+++ b/src/core/hle/service/act/act_a.h
@@ -12,7 +12,7 @@ class ACT_A final : public Module::Interface {
 public:
     explicit ACT_A(std::shared_ptr<Module> act);
 private:
-    SERVICE_SERIALIZATION(ACT_A, act)
+    SERVICE_SERIALIZATION(ACT_A, act, Module)
 };
 
 } // namespace Service::ACT
diff --git a/src/core/hle/service/act/act_u.h b/src/core/hle/service/act/act_u.h
index 14d924025..820aa862a 100644
--- a/src/core/hle/service/act/act_u.h
+++ b/src/core/hle/service/act/act_u.h
@@ -12,7 +12,7 @@ class ACT_U final : public Module::Interface {
 public:
     explicit ACT_U(std::shared_ptr<Module> act);
 private:
-    SERVICE_SERIALIZATION(ACT_U, act)
+    SERVICE_SERIALIZATION(ACT_U, act, Module)
 };
 
 } // namespace Service::ACT
diff --git a/src/core/hle/service/am/am_app.h b/src/core/hle/service/am/am_app.h
index e78b5ef70..fae22d96f 100644
--- a/src/core/hle/service/am/am_app.h
+++ b/src/core/hle/service/am/am_app.h
@@ -12,7 +12,7 @@ class AM_APP final : public Module::Interface {
 public:
     explicit AM_APP(std::shared_ptr<Module> am);
 private:
-    SERVICE_SERIALIZATION(AM_APP, am)
+    SERVICE_SERIALIZATION(AM_APP, am, Module)
 };
 
 } // namespace Service::AM
diff --git a/src/core/hle/service/am/am_net.h b/src/core/hle/service/am/am_net.h
index 74e335b76..4a50c6c07 100644
--- a/src/core/hle/service/am/am_net.h
+++ b/src/core/hle/service/am/am_net.h
@@ -12,7 +12,7 @@ class AM_NET final : public Module::Interface {
 public:
     explicit AM_NET(std::shared_ptr<Module> am);
 private:
-    SERVICE_SERIALIZATION(AM_NET, am)
+    SERVICE_SERIALIZATION(AM_NET, am, Module)
 };
 
 } // namespace Service::AM
diff --git a/src/core/hle/service/am/am_sys.h b/src/core/hle/service/am/am_sys.h
index 028837f3d..c67052302 100644
--- a/src/core/hle/service/am/am_sys.h
+++ b/src/core/hle/service/am/am_sys.h
@@ -12,7 +12,7 @@ class AM_SYS final : public Module::Interface {
 public:
     explicit AM_SYS(std::shared_ptr<Module> am);
 private:
-    SERVICE_SERIALIZATION(AM_SYS, am)
+    SERVICE_SERIALIZATION(AM_SYS, am, Module)
 };
 
 } // namespace Service::AM
diff --git a/src/core/hle/service/am/am_u.h b/src/core/hle/service/am/am_u.h
index b19d48167..c09e27c09 100644
--- a/src/core/hle/service/am/am_u.h
+++ b/src/core/hle/service/am/am_u.h
@@ -12,7 +12,7 @@ class AM_U final : public Module::Interface {
 public:
     explicit AM_U(std::shared_ptr<Module> am);
 private:
-    SERVICE_SERIALIZATION(AM_U, am)
+    SERVICE_SERIALIZATION(AM_U, am, Module)
 };
 
 } // namespace Service::AM
diff --git a/src/core/hle/service/apt/applet_manager.h b/src/core/hle/service/apt/applet_manager.h
index 6bc880bd4..9410b6b54 100644
--- a/src/core/hle/service/apt/applet_manager.h
+++ b/src/core/hle/service/apt/applet_manager.h
@@ -8,9 +8,12 @@
 #include <memory>
 #include <optional>
 #include <vector>
+#include <boost/serialization/array.hpp>
+#include "common/serialization/optional.h"
 #include "core/hle/kernel/event.h"
 #include "core/hle/result.h"
 #include "core/hle/service/fs/archive.h"
+#include "core/global.h"
 
 namespace Core {
 class System;
@@ -84,6 +87,18 @@ struct MessageParameter {
     SignalType signal = SignalType::None;
     std::shared_ptr<Kernel::Object> object = nullptr;
     std::vector<u8> buffer;
+
+private:
+    template <class Archive>
+    void serialize(Archive& ar, const unsigned int)
+    {
+        ar & sender_id;
+        ar & destination_id;
+        ar & signal;
+        ar & object;
+        ar & buffer;
+    }
+    friend class boost::serialization::access;
 };
 
 /// Holds information about the parameters used in StartLibraryApplet
@@ -161,6 +176,17 @@ public:
 
         u64 current_title_id;
         FS::MediaType current_media_type;
+
+    private:
+        template <class Archive>
+        void serialize(Archive& ar, const unsigned int)
+        {
+            ar & next_title_id;
+            ar & next_media_type;
+            ar & current_title_id;
+            ar & current_media_type;
+        }
+        friend class boost::serialization::access;
     };
 
     ApplicationJumpParameters GetApplicationJumpParameters() const {
@@ -199,6 +225,21 @@ private:
             title_id = 0;
             attributes.raw = 0;
         }
+
+    private:
+        template <class Archive>
+        void serialize(Archive& ar, const unsigned int)
+        {
+            ar & applet_id;
+            ar & slot;
+            ar & title_id;
+            ar & registered;
+            ar & loaded;
+            ar & attributes.raw;
+            ar & notification_event;
+            ar & parameter_event;
+        }
+        friend class boost::serialization::access;
     };
 
     ApplicationJumpParameters app_jump_parameters{};
@@ -216,6 +257,25 @@ private:
     SignalType library_applet_closing_command;
 
     Core::System& system;
+
+private:
+    template <class Archive>
+    void serialize(Archive& ar, const unsigned int)
+    {
+        ar & next_parameter;
+        ar & app_jump_parameters;
+        ar & applet_slots;
+        ar & library_applet_closing_command;
+    }
+    friend class boost::serialization::access;
 };
 
 } // namespace Service::APT
+
+namespace boost::serialization {
+    template <class Archive>
+    inline void load_construct_data(Archive& ar, Service::APT::AppletManager* t, const unsigned int)
+    {
+        ::new(t)Service::APT::AppletManager(Core::Global<Core::System>());
+    }
+}
diff --git a/src/core/hle/service/apt/apt.cpp b/src/core/hle/service/apt/apt.cpp
index f7fb0660f..8e02d2bd4 100644
--- a/src/core/hle/service/apt/apt.cpp
+++ b/src/core/hle/service/apt/apt.cpp
@@ -5,6 +5,7 @@
 #include "common/common_paths.h"
 #include "common/file_util.h"
 #include "common/logging/log.h"
+#include "common/archives.h"
 #include "core/core.h"
 #include "core/file_sys/archive_ncch.h"
 #include "core/file_sys/file_backend.h"
@@ -26,8 +27,35 @@
 #include "core/hw/aes/ccm.h"
 #include "core/hw/aes/key.h"
 
+namespace boost::serialization {
+    template <class Archive>
+    void load_construct_data(Archive& ar, Service::APT::Module* t, const unsigned int)
+    {
+        ::new(t)Service::APT::Module(Core::Global<Core::System>());
+    }
+
+    template
+    void load_construct_data<iarchive>(iarchive& ar, Service::APT::Module* t, const unsigned int);
+}
+
 namespace Service::APT {
 
+template <class Archive>
+void Module::serialize(Archive& ar, const unsigned int)
+{
+    ar & shared_font_mem;
+    ar & shared_font_loaded;
+    ar & shared_font_relocated;
+    ar & lock;
+    ar & cpu_percent;
+    ar & unknown_ns_state_field;
+    ar & screen_capture_buffer;
+    ar & screen_capture_post_permission;
+    ar & applet_manager;
+}
+
+SERIALIZE_IMPL(Module)
+
 Module::NSInterface::NSInterface(std::shared_ptr<Module> apt, const char* name, u32 max_session)
     : ServiceFramework(name, max_session), apt(std::move(apt)) {}
 
diff --git a/src/core/hle/service/apt/apt.h b/src/core/hle/service/apt/apt.h
index 2e2c219cd..c12dc3f55 100644
--- a/src/core/hle/service/apt/apt.h
+++ b/src/core/hle/service/apt/apt.h
@@ -6,11 +6,15 @@
 
 #include <memory>
 #include <vector>
+#include <boost/serialization/shared_ptr.hpp>
+#include <boost/serialization/vector.hpp>
+#include "common/archives.h"
 #include "common/common_funcs.h"
 #include "common/common_types.h"
 #include "common/swap.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/service/service.h"
+#include "core/global.h"
 
 namespace Core {
 class System;
@@ -65,7 +69,7 @@ public:
         NSInterface(std::shared_ptr<Module> apt, const char* name, u32 max_session);
         ~NSInterface();
 
-    private:
+    protected:
         std::shared_ptr<Module> apt;
     };
 
@@ -601,7 +605,7 @@ public:
          */
         void CheckNew3DS(Kernel::HLERequestContext& ctx);
 
-    private:
+    protected:
         bool application_reset_prepared{};
         std::shared_ptr<Module> apt;
     };
@@ -630,8 +634,17 @@ private:
         ScreencapPostPermission::CleanThePermission; // TODO(JamePeng): verify the initial value
 
     std::shared_ptr<AppletManager> applet_manager;
+
+    template <class Archive>
+    void serialize(Archive& ar, const unsigned int);
+    friend class boost::serialization::access;
 };
 
 void InstallInterfaces(Core::System& system);
 
 } // namespace Service::APT
+
+namespace boost::serialization {
+    template <class Archive>
+    void load_construct_data(Archive& ar, Service::APT::Module* t, const unsigned int);
+}
diff --git a/src/core/hle/service/apt/apt_a.cpp b/src/core/hle/service/apt/apt_a.cpp
index 7d5c96139..db49c57d8 100644
--- a/src/core/hle/service/apt/apt_a.cpp
+++ b/src/core/hle/service/apt/apt_a.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/service/apt/apt_a.h"
+#include "common/archives.h"
 
 namespace Service::APT {
 
@@ -105,3 +106,5 @@ APT_A::APT_A(std::shared_ptr<Module> apt)
 }
 
 } // namespace Service::APT
+
+SERIALIZE_EXPORT_IMPL(Service::APT::APT_A)
diff --git a/src/core/hle/service/apt/apt_a.h b/src/core/hle/service/apt/apt_a.h
index f481fa1c9..1b81022df 100644
--- a/src/core/hle/service/apt/apt_a.h
+++ b/src/core/hle/service/apt/apt_a.h
@@ -11,6 +11,11 @@ namespace Service::APT {
 class APT_A final : public Module::APTInterface {
 public:
     explicit APT_A(std::shared_ptr<Module> apt);
+private:
+    SERVICE_SERIALIZATION(APT_A, apt, Module)
 };
 
 } // namespace Service::APT
+
+BOOST_CLASS_EXPORT_KEY(Service::APT::APT_A)
+BOOST_SERIALIZATION_CONSTRUCT(Service::APT::APT_A)
diff --git a/src/core/hle/service/apt/apt_s.cpp b/src/core/hle/service/apt/apt_s.cpp
index 1843bdd9a..4d151fb3d 100644
--- a/src/core/hle/service/apt/apt_s.cpp
+++ b/src/core/hle/service/apt/apt_s.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/service/apt/apt_s.h"
+#include "common/archives.h"
 
 namespace Service::APT {
 
@@ -105,3 +106,5 @@ APT_S::APT_S(std::shared_ptr<Module> apt)
 }
 
 } // namespace Service::APT
+
+SERIALIZE_EXPORT_IMPL(Service::APT::APT_S)
diff --git a/src/core/hle/service/apt/apt_s.h b/src/core/hle/service/apt/apt_s.h
index 7e041cbda..ef1c235b0 100644
--- a/src/core/hle/service/apt/apt_s.h
+++ b/src/core/hle/service/apt/apt_s.h
@@ -18,6 +18,11 @@ namespace Service::APT {
 class APT_S final : public Module::APTInterface {
 public:
     explicit APT_S(std::shared_ptr<Module> apt);
+private:
+    SERVICE_SERIALIZATION(APT_S, apt, Module)
 };
 
 } // namespace Service::APT
+
+BOOST_CLASS_EXPORT_KEY(Service::APT::APT_S)
+BOOST_SERIALIZATION_CONSTRUCT(Service::APT::APT_S)
diff --git a/src/core/hle/service/apt/apt_u.cpp b/src/core/hle/service/apt/apt_u.cpp
index 0ecbd65da..7ebaf86e3 100644
--- a/src/core/hle/service/apt/apt_u.cpp
+++ b/src/core/hle/service/apt/apt_u.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/service/apt/apt_u.h"
+#include "common/archives.h"
 
 namespace Service::APT {
 
@@ -102,3 +103,5 @@ APT_U::APT_U(std::shared_ptr<Module> apt)
 }
 
 } // namespace Service::APT
+
+SERIALIZE_EXPORT_IMPL(Service::APT::APT_U)
diff --git a/src/core/hle/service/apt/apt_u.h b/src/core/hle/service/apt/apt_u.h
index 3b342ed55..79d2df651 100644
--- a/src/core/hle/service/apt/apt_u.h
+++ b/src/core/hle/service/apt/apt_u.h
@@ -18,6 +18,11 @@ namespace Service::APT {
 class APT_U final : public Module::APTInterface {
 public:
     explicit APT_U(std::shared_ptr<Module> apt);
+private:
+    SERVICE_SERIALIZATION(APT_U, apt, Module)
 };
 
 } // namespace Service::APT
+
+BOOST_CLASS_EXPORT_KEY(Service::APT::APT_U)
+BOOST_SERIALIZATION_CONSTRUCT(Service::APT::APT_U)
diff --git a/src/core/hle/service/apt/ns_s.cpp b/src/core/hle/service/apt/ns_s.cpp
index e9eb87174..b556845d3 100644
--- a/src/core/hle/service/apt/ns_s.cpp
+++ b/src/core/hle/service/apt/ns_s.cpp
@@ -3,6 +3,7 @@
 // Refer to the license.txt file included.
 
 #include "core/hle/service/apt/ns_s.h"
+#include "common/archives.h"
 
 namespace Service::NS {
 
@@ -29,3 +30,5 @@ NS_S::NS_S(std::shared_ptr<Service::APT::Module> apt)
 }
 
 } // namespace Service::NS
+
+SERIALIZE_EXPORT_IMPL(Service::NS::NS_S)
diff --git a/src/core/hle/service/apt/ns_s.h b/src/core/hle/service/apt/ns_s.h
index 5a5b311b0..8f023e204 100644
--- a/src/core/hle/service/apt/ns_s.h
+++ b/src/core/hle/service/apt/ns_s.h
@@ -14,6 +14,11 @@ namespace Service::NS {
 class NS_S final : public Service::APT::Module::NSInterface {
 public:
     explicit NS_S(std::shared_ptr<Service::APT::Module> apt);
+private:
+    SERVICE_SERIALIZATION(NS_S, apt, Service::APT::Module)
 };
 
 } // namespace Service::NS
+
+BOOST_CLASS_EXPORT_KEY(Service::NS::NS_S)
+BOOST_SERIALIZATION_CONSTRUCT(Service::NS::NS_S)
diff --git a/src/core/hle/service/service.h b/src/core/hle/service/service.h
index bdad47ea8..c0c48892a 100644
--- a/src/core/hle/service/service.h
+++ b/src/core/hle/service/service.h
@@ -199,7 +199,7 @@ extern const std::array<ServiceModuleInfo, 40> service_module_map;
 
 } // namespace Service
 
-#define SERVICE_SERIALIZATION(T, MFIELD) \
+#define SERVICE_SERIALIZATION(T, MFIELD, TMODULE) \
     template <class Archive> \
     void save_construct(Archive& ar, const unsigned int file_version) const \
     { \
@@ -209,7 +209,7 @@ extern const std::array<ServiceModuleInfo, 40> service_module_map;
     template <class Archive> \
     static void load_construct(Archive& ar, T* t, const unsigned int file_version) \
     { \
-        std::shared_ptr<Module> MFIELD; \
+        std::shared_ptr<TMODULE> MFIELD; \
         ar >> MFIELD; \
         ::new(t)T(MFIELD); \
     } \