diff --git a/core/metamod.cpp b/core/metamod.cpp
index 29288b7..c6c9e5b 100644
--- a/core/metamod.cpp
+++ b/core/metamod.cpp
@@ -314,6 +314,8 @@ LoadPluginsFromFile(const char *filepath, int &skipped)
 			{
 #if defined WIN32 || defined _WIN32
 				ext = ".dll";
+#elif defined __APPLE__
+				ext = ".dylib";
 #else
 				ext = "_i486.so";
 #endif
@@ -481,7 +483,7 @@ mm_StartupMetamod(bool is_vsp_load)
 		ConVarFlag_SpOnly);
 
 	mm_basedir = provider->CreateConVar("mm_basedir",
-#if defined __linux__
+#if defined __linux__ || defined __APPLE__
 		"addons/metamod",
 #else
 		"addons\\metamod",
@@ -1123,6 +1125,8 @@ ProcessVDF(const char *path, bool &skipped)
 			file, 
 #if defined WIN32 || defined _WIN32
 			".dll"
+#elif defined __APPLE__
+			".dylib"
 #else
 			"_i486.so"
 #endif
diff --git a/core/metamod.h b/core/metamod.h
index 6fc9712..615059b 100644
--- a/core/metamod.h
+++ b/core/metamod.h
@@ -39,7 +39,7 @@
 #include <sourcehook/sourcehook.h>
 #include <ISmmPlugin.h>
 #include "metamod_provider.h"
-#include "version.h"
+#include <metamod_version.h>
 
 using namespace SourceMM;
 
diff --git a/core/metamod_console.cpp b/core/metamod_console.cpp
index ab35b0b..6771cc4 100644
--- a/core/metamod_console.cpp
+++ b/core/metamod_console.cpp
@@ -425,6 +425,8 @@ bool Command_Meta(IMetamodSourceCommandInfo *info)
 					const char *ext = UTIL_GetExtension(file);
 #if defined WIN32 || defined _WIN32
 					ext = ext ? "" : ".dll";
+#elif defined __APPLE__
+					ext = ext ? "" : ".dylib";
 #else
 					ext = ext ? "" : "_i486.so";
 #endif
@@ -547,6 +549,8 @@ bool Command_Meta(IMetamodSourceCommandInfo *info)
 						const char *ext = UTIL_GetExtension(file);
 #if defined WIN32 || defined _WIN32
 						ext = ext ? "" : ".dll";
+#elif defined __APPLE__
+						ext = ext ? "" : ".dylib";
 #else
 						ext = ext ? "" : "_i486.so";
 #endif
diff --git a/core/metamod_oslink.cpp b/core/metamod_oslink.cpp
index 562a7e5..2ec065d 100644
--- a/core/metamod_oslink.cpp
+++ b/core/metamod_oslink.cpp
@@ -27,9 +27,9 @@
 
 #include <stdio.h>
 #include "metamod_oslink.h"
-#include <malloc.h>
+#include <stdlib.h>
 #include <stdio.h>
-#ifdef __linux
+#if defined __linux__ || defined __APPLE__
 #include <errno.h>
 #endif
 
@@ -57,7 +57,7 @@ const char *dlerror()
 }
 #endif
 
-#if defined __linux__
+#if defined __linux_ || defined __APPLE___
 int GetLastError()
 {
 	return errno;
@@ -82,7 +82,7 @@ bool GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength)
 		return false;
 	HMODULE dll = (HMODULE)mem.AllocationBase;
 	GetModuleFileName(dll, (LPTSTR)buffer, maxlength);
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
 	Dl_info info;
 	if (!dladdr(pAddr, &info))
 		return false;
diff --git a/core/metamod_oslink.h b/core/metamod_oslink.h
index eb1b11a..f38eda3 100644
--- a/core/metamod_oslink.h
+++ b/core/metamod_oslink.h
@@ -51,11 +51,15 @@
 	#define PATH_SEP_CHAR		'\\'
 	#define ALT_SEP_CHAR		'/'
 	#define PATH_SIZE			MAX_PATH
-	#define SERVER_DLL			"server.dll"
 	#define strcasecmp			stricmp
 	inline bool _IsPathSepChar(char c) { return (c == '/' || c == '\\'); }
-#elif defined __linux__
-	#define OS_LINUX
+#elif defined __linux__ || defined __APPLE__
+	#if defined __linux__
+		#define OS_LINUX
+	#elif defined __APPLE__
+		#define OS_DARWIN
+		#include <sys/syslimits.h>
+	#endif
 	#include <dlfcn.h>
 	#include <unistd.h>
 	#include <sys/types.h>
@@ -69,11 +73,10 @@
 	#define PATH_SIZE			PATH_MAX
 	#define	stricmp				strcasecmp
 	#define strnicmp			strncasecmp
-	#define SERVER_DLL			"server_i486.so"
 	inline bool _IsPathSepChar(char c) { return (c == '/'); }
 #endif
 
-#if defined __linux__
+#if defined __linux__ || defined __APPLE__
 	#include <errno.h>
 	int GetLastError();
 #endif
@@ -103,7 +106,7 @@ bool GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength);
 #endif
 #endif
 
-#ifndef __linux__
+#if !defined __linux__ && !defined __APPLE__
 	#define snprintf	_snprintf
 	#if defined _MSC_VER && _MSC_VER < 1500
 		#define vsnprintf	_vsnprintf
diff --git a/core/metamod_util.cpp b/core/metamod_util.cpp
index 6d6bfea..cd9575a 100644
--- a/core/metamod_util.cpp
+++ b/core/metamod_util.cpp
@@ -197,7 +197,7 @@ inline bool pathchar_sep(char a)
 {
 #if defined WIN32
 	return (a == '/' || a == '\\');
-#elif defined __linux__
+#else
 	return (a == '/');
 #endif
 }
@@ -208,7 +208,7 @@ inline bool pathstr_isabsolute(const char *str)
 	return (pathchar_isalpha(str[0]) 
 		&& str[1] == ':' 
 		&& pathchar_sep(str[2]));
-#elif defined __linux__
+#else
 	return (str[0] == '/');
 #endif
 }
diff --git a/loader/gamedll.cpp b/loader/gamedll.cpp
index 35a2c2c..15c9460 100644
--- a/loader/gamedll.cpp
+++ b/loader/gamedll.cpp
@@ -54,6 +54,8 @@ static char mm_path[PLATFORM_MAX_PATH];
 
 #if defined _WIN32
 #define SERVER_NAME			"server.dll"
+#elif defined __APPLE__
+#define SERVER_NAME			"server.dylib"
 #elif defined __linux__
 #define SERVER_NAME			"server" LIB_SUFFIX
 #endif
diff --git a/loader/loader.cpp b/loader/loader.cpp
index 6cbe809..c6ef8f0 100644
--- a/loader/loader.cpp
+++ b/loader/loader.cpp
@@ -81,6 +81,9 @@ static const char *backend_names[] =
 #if defined _WIN32
 #define LIBRARY_EXT		".dll"
 #define LIBRARY_MINEXT	".dll"
+#elif defined __APPLE__
+#define LIBRARY_EXT		".dylib"
+#define LIBRARY_MINEXT	".dylib"
 #elif defined __linux__
 #define LIBRARY_EXT		LIB_SUFFIX
 #define LIBRARY_MINEXT	".so"
@@ -179,6 +182,9 @@ mm_GetProcAddress(const char *name)
 #if defined _WIN32
 #define TIER0_NAME			"bin\\tier0.dll"
 #define VSTDLIB_NAME		"bin\\vstdlib.dll"
+#elif defined __APPLE__
+#define TIER0_NAME			"bin/libtier0.dylib"
+#define VSTDLIB_NAME		"bin/libvstdlib.dylib"
 #elif defined __linux__
 #define TIER0_NAME			"bin/" LIB_PREFIX "tier0" LIB_SUFFIX
 #define VSTDLIB_NAME		"bin/" LIB_PREFIX "vstdlib" LIB_SUFFIX
diff --git a/loader/loader.h b/loader/loader.h
index 0df31ad..ca95a70 100644
--- a/loader/loader.h
+++ b/loader/loader.h
@@ -40,26 +40,33 @@
 #define SH_COMP_MSVC	2
 
 #if defined WIN32
+#define SH_SYS              SH_SYS_WIN32
+#define SH_XP               SH_XP_WINAPI
+#define SH_COMP             SH_COMP_MSVC
 #define WINDOWS_LEAN_AND_MEAN
 #include <windows.h>
 #include <direct.h>
 #define PLATFORM_MAX_PATH	MAX_PATH
-#define SH_SYS				SH_SYS_WIN32
-#define SH_XP				SH_XP_WINAPI
-#define SH_COMP				SH_COMP_MSVC
 #define	PATH_SEP_STR		"\\"
 #define PATH_SEP_CHAR		'\\'
 #define ALT_SEP_CHAR		'/'
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
+#if defined __linux__
+#define SH_SYS				SH_SYS_LINUX
+#elif defined __APPLE__
+#define SH_SYS				SH_SYS_APPLE
+#endif
+#define SH_XP               SH_XP_POSIX
+#define SH_COMP             SH_COMP_GCC
 #include <dlfcn.h>
 #include <dirent.h>
 #include <stdint.h>
 #include <unistd.h>
+#if SH_SYS == SH_SYS_APPLE
+#include <sys/syslimits.h>
+#endif
 typedef void *	HMODULE;
 #define PLATFORM_MAX_PATH	PATH_MAX
-#define SH_SYS				SH_SYS_LINUX
-#define SH_XP				SH_XP_POSIX
-#define SH_COMP				SH_COMP_GCC
 #define	PATH_SEP_STR		"/"
 #define PATH_SEP_CHAR		'/'
 #define ALT_SEP_CHAR		'\\'
diff --git a/loader/utility.cpp b/loader/utility.cpp
index f551031..1d2a2a0 100644
--- a/loader/utility.cpp
+++ b/loader/utility.cpp
@@ -270,7 +270,7 @@ mm_ResolvePath(const char *path, char *buffer, size_t maxlength)
 {
 #if defined _WIN32
 	return _fullpath(buffer, path, maxlength) != NULL;
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
 	assert(maxlength >= PATH_MAX);
 	return realpath(path, buffer) != NULL;
 #endif
@@ -289,7 +289,7 @@ mm_LoadLibrary(const char *path, char *buffer, size_t maxlength)
 		mm_GetPlatformError(buffer, maxlength);
 		return NULL;
 	}
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
 	lib = dlopen(path, RTLD_NOW);
 
 	if (lib == NULL)
@@ -307,7 +307,7 @@ mm_GetLibAddress(void *lib, const char *name)
 {
 #if defined _WIN32
 	return GetProcAddress((HMODULE)lib, name);
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
 	return dlsym(lib, name);
 #endif
 }
@@ -317,7 +317,7 @@ mm_UnloadLibrary(void *lib)
 {
 #if defined _WIN32
 	FreeLibrary((HMODULE)lib);
-#else
+#elif defined __linux__ || defined __APPLE__
 	dlclose(lib);
 #endif
 }
@@ -333,7 +333,7 @@ mm_GetFileOfAddress(void *pAddr, char *buffer, size_t maxlength)
 		return false;
 	HMODULE dll = (HMODULE)mem.AllocationBase;
 	GetModuleFileName(dll, (LPTSTR)buffer, maxlength);
-#elif defined __linux__
+#elif defined __linux__ || defined __APPLE__
 	Dl_info info;
 	if (!dladdr(pAddr, &info))
 		return false;