diff --git a/CMakeLists.txt b/CMakeLists.txt
index 67a7e410..5d48bc2c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -150,6 +150,7 @@ set(FS_SOURCE_FILES src/core/fs/archive_self_ncch.cpp src/core/fs/archive_save_d
                     src/core/fs/ivfc.cpp
 )
 
+set(APPLET_SOURCE_FILES src/core/applets/applet.cpp src/core/applets/mii_selector.cpp src/core/applets/software_keyboard.cpp src/core/applets/applet_manager.cpp)
 set(RENDERER_SW_SOURCE_FILES src/core/renderer_sw/renderer_sw.cpp)
 
 set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/termcolor.hpp
@@ -178,7 +179,8 @@ set(HEADER_FILES include/emulator.hpp include/helpers.hpp include/termcolor.hpp
                  include/config.hpp include/services/ir_user.hpp include/http_server.hpp include/cheats.hpp
                  include/action_replay.hpp include/renderer_sw/renderer_sw.hpp include/compiler_builtins.hpp
                  include/fs/romfs.hpp include/fs/ivfc.hpp include/discord_rpc.hpp include/services/http.hpp include/result/result_cfg.hpp
-                 include/math_util.hpp include/services/soc.hpp include/services/news_u.hpp
+                 include/applets/applet.hpp include/applets/mii_selector.hpp include/math_util.hpp include/services/soc.hpp 
+                 include/services/news_u.hpp include/applets/software_keyboard.hpp include/applets/applet_manager.hpp
 )
 
 cmrc_add_resource_library(
@@ -203,6 +205,7 @@ source_group("Source Files\\Core\\Filesystem" FILES ${FS_SOURCE_FILES})
 source_group("Source Files\\Core\\Kernel" FILES ${KERNEL_SOURCE_FILES})
 source_group("Source Files\\Core\\Loader" FILES ${LOADER_SOURCE_FILES})
 source_group("Source Files\\Core\\Services" FILES ${SERVICE_SOURCE_FILES})
+source_group("Source Files\\Core\\Applets" FILES ${APPLET_SOURCE_FILES})
 source_group("Source Files\\Core\\PICA" FILES ${PICA_SOURCE_FILES})
 source_group("Source Files\\Core\\Software Renderer" FILES ${RENDERER_SW_SOURCE_FILES})
 source_group("Source Files\\Third Party" FILES ${THIRD_PARTY_SOURCE_FILES})
@@ -265,7 +268,7 @@ endif()
 
 source_group("Header Files\\Core" FILES ${HEADER_FILES})
 set(ALL_SOURCES ${SOURCE_FILES} ${FS_SOURCE_FILES} ${CRYPTO_SOURCE_FILES} ${KERNEL_SOURCE_FILES} ${LOADER_SOURCE_FILES} ${SERVICE_SOURCE_FILES}
-	${RENDERER_SW_SOURCE_FILES} ${PICA_SOURCE_FILES} ${THIRD_PARTY_SOURCE_FILES} ${HEADER_FILES})
+	${APPLET_SOURCE_FILES} ${RENDERER_SW_SOURCE_FILES} ${PICA_SOURCE_FILES} ${THIRD_PARTY_SOURCE_FILES} ${HEADER_FILES})
 
 if(ENABLE_OPENGL)
     # Add the OpenGL source files to ALL_SOURCES
diff --git a/include/applets/applet.hpp b/include/applets/applet.hpp
new file mode 100644
index 00000000..0c3ab519
--- /dev/null
+++ b/include/applets/applet.hpp
@@ -0,0 +1,88 @@
+#pragma once
+
+#include "helpers.hpp"
+#include "memory.hpp"
+#include "result/result.hpp"
+
+namespace Applets {
+	namespace AppletIDs {
+		enum : u32 {
+			None = 0,
+			SysAppletMask = 0x100,
+			HomeMenu = 0x101,
+			AltMenu = 0x103,
+			Camera = 0x110,
+			Friends = 0x112,
+			GameNotes = 0x113,
+			Browser = 0x114,
+			InstructionManual = 0x115,
+			Notifications = 0x116,
+			Miiverse = 0x117,
+			MiiversePosting = 0x118,
+			AmiiboSettings = 0x119,
+			SysLibraryAppletMask = 0x200,
+			SoftwareKeyboard = 0x201,
+			MiiSelector = 0x202,
+			PNote = 0x204,  // TODO: What dis?
+			SNote = 0x205,  // What is this too?
+			ErrDisp = 0x206,
+			EshopMint = 0x207,
+			CirclePadProCalib = 0x208,
+			Notepad = 0x209,
+			Application = 0x300,
+			EshopTiger = 0x301,
+			LibraryAppletMask = 0x400,
+			SoftwareKeyboard2 = 0x401,
+			MiiSelector2 = 0x402,
+			Pnote2 = 0x404,
+			SNote2 = 0x405,
+			ErrDisp2 = 0x406,
+			EshopMint2 = 0x407,
+			CirclePadProCalib2 = 0x408,
+			Notepad2 = 0x409,
+		};
+	}
+
+	enum class APTSignal : u32 {
+		None = 0x0,
+		Wakeup = 0x1,
+		Request = 0x2,
+		Response = 0x3,
+		Exit = 0x4,
+		Message = 0x5,
+		HomeButtonSingle = 0x6,
+		HomeButtonDouble = 0x7,
+		DspSleep = 0x8,
+		DspWakeup = 0x9,
+		WakeupByExit = 0xA,
+		WakeupByPause = 0xB,
+		WakeupByCancel = 0xC,
+		WakeupByCancelAll = 0xD,
+		WakeupByPowerButtonClick = 0xE,
+		WakeupToJumpHome = 0xF,
+		RequestForSysApplet = 0x10,
+		WakeupToLaunchApplication = 0x11,
+	};
+
+	struct Parameter {
+		u32 senderID;
+		u32 destID;
+		APTSignal signal;
+		std::vector<u8> data;
+	};
+
+	class AppletBase {
+		Memory& mem;
+
+	  public:
+		virtual const char* name() = 0;
+
+		// Called by APT::StartLibraryApplet and similar
+		virtual Result::HorizonResult start() = 0;
+		// Transfer parameters from application -> applet
+		virtual Result::HorizonResult receiveParameter() = 0;
+		virtual void reset() = 0;
+
+		AppletBase(Memory& mem) : mem(mem) {}
+	};
+}  // namespace Applets
\ No newline at end of file
diff --git a/include/applets/applet_manager.hpp b/include/applets/applet_manager.hpp
new file mode 100644
index 00000000..95b54009
--- /dev/null
+++ b/include/applets/applet_manager.hpp
@@ -0,0 +1,17 @@
+#include "applets/mii_selector.hpp"
+#include "applets/software_keyboard.hpp"
+#include "helpers.hpp"
+#include "memory.hpp"
+#include "result/result.hpp"
+
+namespace Applets {
+	class AppletManager {
+		MiiSelectorApplet miiSelector;
+		SoftwareKeyboardApplet swkbd;
+
+	  public:
+		AppletManager(Memory& mem);
+		void reset();
+		AppletBase* getApplet(u32 id);
+	};
+}  // namespace Applets
\ No newline at end of file
diff --git a/include/applets/mii_selector.hpp b/include/applets/mii_selector.hpp
new file mode 100644
index 00000000..e40547fb
--- /dev/null
+++ b/include/applets/mii_selector.hpp
@@ -0,0 +1,13 @@
+#include "applets/applet.hpp"
+
+namespace Applets {
+	class MiiSelectorApplet final : public AppletBase {
+	  public:
+		virtual const char* name() override { return "Mii Selector"; }
+		virtual Result::HorizonResult start() override;
+		virtual Result::HorizonResult receiveParameter() override;
+		virtual void reset() override;
+
+		MiiSelectorApplet(Memory& memory) : AppletBase(memory) {}
+	};
+}  // namespace Applets
\ No newline at end of file
diff --git a/include/applets/software_keyboard.hpp b/include/applets/software_keyboard.hpp
new file mode 100644
index 00000000..1fb721a1
--- /dev/null
+++ b/include/applets/software_keyboard.hpp
@@ -0,0 +1,13 @@
+#include "applets/applet.hpp"
+
+namespace Applets {
+	class SoftwareKeyboardApplet final : public AppletBase {
+	  public:
+		virtual const char* name() override { return "Software Keyboard"; }
+		virtual Result::HorizonResult start() override;
+		virtual Result::HorizonResult receiveParameter() override;
+		virtual void reset() override;
+
+		SoftwareKeyboardApplet(Memory& memory) : AppletBase(memory) {}
+	};
+}  // namespace Applets
\ No newline at end of file
diff --git a/include/services/apt.hpp b/include/services/apt.hpp
index 56bf3083..a7df056f 100644
--- a/include/services/apt.hpp
+++ b/include/services/apt.hpp
@@ -6,6 +6,8 @@
 #include "memory.hpp"
 #include "result/result.hpp"
 
+#include "applets/applet_manager.hpp"
+
 // Yay, more circular dependencies
 class Kernel;
 
@@ -23,6 +25,7 @@ class APTService {
 	std::optional<Handle> resumeEvent = std::nullopt;
 
 	ConsoleModel model = ConsoleModel::Old3DS;
+	Applets::AppletManager appletManager;
 
 	MAKE_LOG_FUNCTION(log, aptLogger)
 
@@ -33,17 +36,22 @@ class APTService {
 	void checkNew3DS(u32 messagePointer);
 	void checkNew3DSApp(u32 messagePointer);
 	void enable(u32 messagePointer);
+	void getAppletInfo(u32 messagePointer);
 	void getSharedFont(u32 messagePointer);
 	void getWirelessRebootInfo(u32 messagePointer);
 	void glanceParameter(u32 messagePointer);
 	void initialize(u32 messagePointer);
 	void inquireNotification(u32 messagePointer);
+	void isRegistered(u32 messagePointer);
 	void notifyToWait(u32 messagePointer);
 	void preloadLibraryApplet(u32 messagePointer);
+	void prepareToStartLibraryApplet(u32 messagePointer);
 	void receiveParameter(u32 messagePointer);
 	void replySleepQuery(u32 messagePointer);
 	void setApplicationCpuTimeLimit(u32 messagePointer);
 	void setScreencapPostPermission(u32 messagePointer);
+	void sendParameter(u32 messagePointer);
+	void startLibraryApplet(u32 messagePointer);
 	void theSmashBrosFunction(u32 messagePointer);
 
 	// Percentage of the syscore available to the application, between 5% and 89%
@@ -67,7 +75,7 @@ class APTService {
 	u32 screencapPostPermission;
 
 public:
-	APTService(Memory& mem, Kernel& kernel) : mem(mem), kernel(kernel) {}
+	APTService(Memory& mem, Kernel& kernel) : mem(mem), kernel(kernel), appletManager(mem) {}
 	void reset();
 	void handleSyncRequest(u32 messagePointer);
 };
\ No newline at end of file
diff --git a/include/services/gsp_gpu.hpp b/include/services/gsp_gpu.hpp
index c9facffb..92ca36e2 100644
--- a/include/services/gsp_gpu.hpp
+++ b/include/services/gsp_gpu.hpp
@@ -63,7 +63,9 @@ class GPUService {
 	// Service commands
 	void acquireRight(u32 messagePointer);
 	void flushDataCache(u32 messagePointer);
+	void importDisplayCaptureInfo(u32 messagePointer);
 	void registerInterruptRelayQueue(u32 messagePointer);
+	void saveVramSysArea(u32 messagePointer);
 	void setAxiConfigQoSMode(u32 messagePointer);
 	void setBufferSwap(u32 messagePointer);
 	void setInternalPriorities(u32 messagePointer);
diff --git a/src/core/applets/applet.cpp b/src/core/applets/applet.cpp
new file mode 100644
index 00000000..e69de29b
diff --git a/src/core/applets/applet_manager.cpp b/src/core/applets/applet_manager.cpp
new file mode 100644
index 00000000..c94eee28
--- /dev/null
+++ b/src/core/applets/applet_manager.cpp
@@ -0,0 +1,21 @@
+#include "applets/applet_manager.hpp"
+using namespace Applets;
+
+AppletManager::AppletManager(Memory& mem) : miiSelector(mem), swkbd(mem) {}
+
+void AppletManager::reset() {
+	miiSelector.reset();
+	swkbd.reset();
+}
+
+AppletBase* AppletManager::getApplet(u32 id) {
+	switch (id) {
+		case AppletIDs::MiiSelector:
+		case AppletIDs::MiiSelector2: return &miiSelector;
+
+		case AppletIDs::SoftwareKeyboard:
+		case AppletIDs::SoftwareKeyboard2: return &swkbd;
+
+		default: return nullptr;
+	}
+}
\ No newline at end of file
diff --git a/src/core/applets/mii_selector.cpp b/src/core/applets/mii_selector.cpp
new file mode 100644
index 00000000..211e6f07
--- /dev/null
+++ b/src/core/applets/mii_selector.cpp
@@ -0,0 +1,11 @@
+#include "applets/mii_selector.hpp"
+
+using namespace Applets;
+
+void MiiSelectorApplet::reset() {}
+Result::HorizonResult MiiSelectorApplet::start() { return Result::Success; }
+
+Result::HorizonResult MiiSelectorApplet::receiveParameter() {
+	Helpers::warn("Mii Selector: Unimplemented ReceiveParameter");
+	return Result::Success;
+}
\ No newline at end of file
diff --git a/src/core/applets/software_keyboard.cpp b/src/core/applets/software_keyboard.cpp
new file mode 100644
index 00000000..2ff22792
--- /dev/null
+++ b/src/core/applets/software_keyboard.cpp
@@ -0,0 +1,11 @@
+#include "applets/software_keyboard.hpp"
+
+using namespace Applets;
+
+void SoftwareKeyboardApplet::reset() {}
+Result::HorizonResult SoftwareKeyboardApplet::start() { return Result::Success; }
+
+Result::HorizonResult SoftwareKeyboardApplet::receiveParameter() {
+	Helpers::warn("Software keyboard: Unimplemented ReceiveParameter");
+	return Result::Success;
+}
\ No newline at end of file
diff --git a/src/core/services/apt.cpp b/src/core/services/apt.cpp
index 4ad7f353..2bb3e4a2 100644
--- a/src/core/services/apt.cpp
+++ b/src/core/services/apt.cpp
@@ -9,10 +9,15 @@ namespace APTCommands {
 		GetLockHandle = 0x00010040,
 		Initialize = 0x00020080,
 		Enable = 0x00030040,
+		GetAppletInfo = 0x00060040,
+		IsRegistered = 0x00090040,
 		InquireNotification = 0x000B0040,
+		SendParameter = 0x000C0104,
 		ReceiveParameter = 0x000D0080,
 		GlanceParameter = 0x000E0080,
 		PreloadLibraryApplet = 0x00160040,
+		PrepareToStartLibraryApplet = 0x00180040,
+		StartLibraryApplet = 0x001E0084,
 		ReplySleepQuery = 0x003E0080,
 		NotifyToWait = 0x00430040,
 		GetSharedFont = 0x00440000,
@@ -60,6 +65,8 @@ void APTService::reset() {
 	lockHandle = std::nullopt;
 	notificationEvent = std::nullopt;
 	resumeEvent = std::nullopt;
+
+	appletManager.reset();
 }
 
 void APTService::handleSyncRequest(u32 messagePointer) {
@@ -69,22 +76,26 @@ void APTService::handleSyncRequest(u32 messagePointer) {
 		case APTCommands::CheckNew3DS: checkNew3DS(messagePointer); break;
 		case APTCommands::CheckNew3DSApp: checkNew3DSApp(messagePointer); break;
 		case APTCommands::Enable: enable(messagePointer); break;
+		case APTCommands::GetAppletInfo: getAppletInfo(messagePointer); break;
 		case APTCommands::GetSharedFont: getSharedFont(messagePointer); break;
 		case APTCommands::Initialize: initialize(messagePointer); break;
 		case APTCommands::InquireNotification: [[likely]] inquireNotification(messagePointer); break;
+		case APTCommands::IsRegistered: isRegistered(messagePointer); break;
 		case APTCommands::GetApplicationCpuTimeLimit: getApplicationCpuTimeLimit(messagePointer); break;
 		case APTCommands::GetLockHandle: getLockHandle(messagePointer); break;
 		case APTCommands::GetWirelessRebootInfo: getWirelessRebootInfo(messagePointer); break;
 		case APTCommands::GlanceParameter: glanceParameter(messagePointer); break;
 		case APTCommands::NotifyToWait: notifyToWait(messagePointer); break;
 		case APTCommands::PreloadLibraryApplet: preloadLibraryApplet(messagePointer); break;
+		case APTCommands::PrepareToStartLibraryApplet: prepareToStartLibraryApplet(messagePointer); break;
 		case APTCommands::ReceiveParameter: [[likely]] receiveParameter(messagePointer); break;
 		case APTCommands::ReplySleepQuery: replySleepQuery(messagePointer); break;
 		case APTCommands::SetApplicationCpuTimeLimit: setApplicationCpuTimeLimit(messagePointer); break;
+		case APTCommands::SendParameter: sendParameter(messagePointer); break;
 		case APTCommands::SetScreencapPostPermission: setScreencapPostPermission(messagePointer); break;
 		case APTCommands::TheSmashBrosFunction: theSmashBrosFunction(messagePointer); break;
 		default:
-			Helpers::panicDev("APT service requested. Command: %08X\n", command);
+			Helpers::panic("APT service requested. Command: %08X\n", command);
 			mem.write32(messagePointer + 4, Result::Success);
 			break;
 	}
@@ -116,9 +127,38 @@ void APTService::appletUtility(u32 messagePointer) {
 	}
 }
 
+void APTService::getAppletInfo(u32 messagePointer) {
+	const u32 appID = mem.read32(messagePointer + 4);
+	Helpers::warn("APT::GetAppletInfo (appID = %X)\n", appID);
+
+	mem.write32(messagePointer, IPC::responseHeader(0x06, 7, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+
+	mem.write8(messagePointer + 20, 1); // 1 = registered
+	mem.write8(messagePointer + 24, 1); // 1 = loaded
+	// TODO: The rest of this
+}
+
+void APTService::isRegistered(u32 messagePointer) {
+	const u32 appID = mem.read32(messagePointer + 4);
+	Helpers::warn("APT::IsRegistered (appID = %X)", appID);
+
+	mem.write32(messagePointer, IPC::responseHeader(0x09, 2, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+	mem.write8(messagePointer + 8, 1); // Return that the app is always registered. This might break with home menu?
+}
+
 void APTService::preloadLibraryApplet(u32 messagePointer) {
 	const u32 appID = mem.read32(messagePointer + 4);
-	log("APT::PreloadLibraryApplet (app ID = %d) (stubbed)\n", appID);
+	log("APT::PreloadLibraryApplet (app ID = %X) (stubbed)\n", appID);
+
+	mem.write32(messagePointer, IPC::responseHeader(0x16, 1, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
+void APTService::prepareToStartLibraryApplet(u32 messagePointer) {
+	const u32 appID = mem.read32(messagePointer + 4);
+	log("APT::PrepareToStartLibraryApplet (app ID = %X) (stubbed)\n", appID);
 
 	mem.write32(messagePointer, IPC::responseHeader(0x16, 1, 0));
 	mem.write32(messagePointer + 4, Result::Success);
@@ -193,6 +233,35 @@ void APTService::notifyToWait(u32 messagePointer) {
 	mem.write32(messagePointer + 4, Result::Success);
 }
 
+void APTService::sendParameter(u32 messagePointer) {
+	const u32 sourceAppID = mem.read32(messagePointer + 4);
+	const u32 destAppID = mem.read32(messagePointer + 8);
+	const u32 cmd = mem.read32(messagePointer + 12);
+	const u32 paramSize = mem.read32(messagePointer + 16);
+
+	const u32 parameterHandle = mem.read32(messagePointer + 24); // What dis?
+	const u32 parameterPointer = mem.read32(messagePointer + 32);
+	log("APT::SendParameter (source app = %X, dest app = %X, cmd = %X, size = %X) (Stubbed)", sourceAppID, destAppID, cmd, paramSize);
+
+	mem.write32(messagePointer, IPC::responseHeader(0x0C, 1, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+
+	if (sourceAppID != Applets::AppletIDs::Application) {
+		Helpers::warn("APT::SendParameter: Unimplemented source applet ID");
+	}
+
+	Applets::AppletBase* destApplet = appletManager.getApplet(destAppID);
+	if (destApplet == nullptr) {
+		Helpers::warn("APT::SendParameter: Unimplemented dest applet ID");
+	} else {
+		auto result = destApplet->receiveParameter();
+	}
+
+	if (resumeEvent.has_value()) {
+		kernel.signalEvent(resumeEvent.value());
+	}
+}
+
 void APTService::receiveParameter(u32 messagePointer) {
 	const u32 app = mem.read32(messagePointer + 4);
 	const u32 size = mem.read32(messagePointer + 8);
diff --git a/src/core/services/gsp_gpu.cpp b/src/core/services/gsp_gpu.cpp
index c2f7faee..0e27c0ec 100644
--- a/src/core/services/gsp_gpu.cpp
+++ b/src/core/services/gsp_gpu.cpp
@@ -15,6 +15,8 @@ namespace ServiceCommands {
 		FlushDataCache = 0x00080082,
 		SetLCDForceBlack = 0x000B0040,
 		TriggerCmdReqQueue = 0x000C0000,
+		ImportDisplayCaptureInfo = 0x00180000,
+		SaveVramSysArea = 0x00190000,
 		SetInternalPriorities = 0x001E0080,
 		StoreDataCache = 0x001F0082
 	};
@@ -42,15 +44,17 @@ void GPUService::reset() {
 void GPUService::handleSyncRequest(u32 messagePointer) {
 	const u32 command = mem.read32(messagePointer);
 	switch (command) {
+		case ServiceCommands::TriggerCmdReqQueue: [[likely]] triggerCmdReqQueue(messagePointer); break;
 		case ServiceCommands::AcquireRight: acquireRight(messagePointer); break;
 		case ServiceCommands::FlushDataCache: flushDataCache(messagePointer); break;
+		case ServiceCommands::ImportDisplayCaptureInfo: importDisplayCaptureInfo(messagePointer); break;
 		case ServiceCommands::RegisterInterruptRelayQueue: registerInterruptRelayQueue(messagePointer); break;
+		case ServiceCommands::SaveVramSysArea: saveVramSysArea(messagePointer); break;
 		case ServiceCommands::SetAxiConfigQoSMode: setAxiConfigQoSMode(messagePointer); break;
 		case ServiceCommands::SetBufferSwap: setBufferSwap(messagePointer); break;
 		case ServiceCommands::SetInternalPriorities: setInternalPriorities(messagePointer); break;
 		case ServiceCommands::SetLCDForceBlack: setLCDForceBlack(messagePointer); break;
 		case ServiceCommands::StoreDataCache: storeDataCache(messagePointer); break;
-		case ServiceCommands::TriggerCmdReqQueue: [[likely]] triggerCmdReqQueue(messagePointer); break;
 		case ServiceCommands::WriteHwRegs: writeHwRegs(messagePointer); break;
 		case ServiceCommands::WriteHwRegsWithMask: writeHwRegsWithMask(messagePointer); break;
 		default: Helpers::panic("GPU service requested. Command: %08X\n", command);
@@ -456,3 +460,20 @@ void GPUService::triggerTextureCopy(u32* cmd) {
 	// NSMB2 relies on this
 	requestInterrupt(GPUInterrupt::PPF);
 }
+
+// Used when transitioning from the app to an OS applet, such as software keyboard, mii maker, mii selector, etc
+// Stubbed until we decide to support LLE applets
+void GPUService::saveVramSysArea(u32 messagePointer) {
+	Helpers::warn("GSP::GPU::SaveVramSysArea (stubbed)");
+
+	mem.write32(messagePointer, IPC::responseHeader(0x19, 1, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+}
+
+// Used in similar fashion to the SaveVramSysArea function
+void GPUService::importDisplayCaptureInfo(u32 messagePointer) {
+	Helpers::warn("GSP::GPU::ImportDisplayCaptureInfo (stubbed)");
+
+	mem.write32(messagePointer, IPC::responseHeader(0x18, 9, 0));
+	mem.write32(messagePointer + 4, Result::Success);
+}
\ No newline at end of file