diff --git a/CMakeLists.txt b/CMakeLists.txt
index d771b73..b78ff66 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CMAKE_SOURCE_DIR}/cmake)
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
 set(fx_all_assemblies
-	fx
+	fx.runtime
 	fx.collections)
 
 if (NOT DEFINED fx_assemblies)
@@ -36,6 +36,19 @@ set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/lib)
 set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
 
-foreach (assembly ${fx_assemblies})
-	add_subdirectory(${assembly})
-endforeach (assembly)
+include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/Templates.cmake)
+
+if ("fx.runtime" IN_LIST fx_assemblies)
+	add_fx_assembly(
+		NAME fx.runtime
+		NAMESPACES fx fx.reflection)
+endif ()
+
+if ("fx.collections" IN_LIST fx_assemblies)
+	add_fx_assembly(
+		NAME fx.collections
+		NAMESPACES fx.collections
+		DEPENDENCIES fx.runtime)
+endif ()
+
+add_executable(dynamic-test test/dynamic-test.c)
diff --git a/assemblies/fx.collections.c b/assemblies/fx.collections.c
new file mode 100644
index 0000000..d94f636
--- /dev/null
+++ b/assemblies/fx.collections.c
@@ -0,0 +1,14 @@
+#include <fx/macros.h>
+#include <fx/reflection/assembly.h>
+
+FX_ASSEMBLY_BEGIN()
+	FX_ASSEMBLY_NAME("fx.collections");
+	FX_ASSEMBLY_VERSION(1, 0, 0, 0);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "array", fx_array);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "bitbuffer", fx_bitbuffer);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "bitmap", fx_bitmap);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "dict", fx_dict);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "hashmap", fx_hashmap);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "list", fx_list);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.collections", "tree", fx_tree);
+FX_ASSEMBLY_END()
diff --git a/assemblies/fx.runtime.c b/assemblies/fx.runtime.c
new file mode 100644
index 0000000..664289c
--- /dev/null
+++ b/assemblies/fx.runtime.c
@@ -0,0 +1,12 @@
+#include <fx/macros.h>
+#include <fx/reflection/assembly.h>
+
+FX_ASSEMBLY_BEGIN()
+	FX_ASSEMBLY_NAME("fx.runtime");
+	FX_ASSEMBLY_VERSION(1, 0, 0, 0);
+	FX_ASSEMBLY_EXPORT_TYPE("fx", "stream", fx_stream);
+	FX_ASSEMBLY_EXPORT_TYPE("fx", "string", fx_string);
+	FX_ASSEMBLY_EXPORT_TYPE("fx", "stringstream", fx_stringstream);
+	FX_ASSEMBLY_EXPORT_TYPE("fx", "iterator", fx_iterator);
+	FX_ASSEMBLY_EXPORT_TYPE("fx.reflection", "assembly", fx_assembly);
+FX_ASSEMBLY_END()
diff --git a/cmake/Templates.cmake b/cmake/Templates.cmake
index 49e2b76..199457b 100644
--- a/cmake/Templates.cmake
+++ b/cmake/Templates.cmake
@@ -2,12 +2,9 @@ function(add_fx_assembly)
 	set(options)
 	set(one_value_args NAME)
 	set(multi_value_args
+		NAMESPACES
 		DEPENDENCIES
-		SUBDIRS
-		EXTRA_SOURCES
-		LIBS
-		INCLUDE_DIRS
-		DEFINES)
+		LIBS)
 	cmake_parse_arguments(PARSE_ARGV 0 arg
 		"${options}"
 		"${one_value_args}"
@@ -19,28 +16,23 @@ function(add_fx_assembly)
 	string(REPLACE "." "_" assembly_token ${assembly_name})
 	string(TOUPPER ${assembly_token} assembly_token)
 
-	file(GLOB sources *.c *.h)
+	set(assembly_include_paths "")
+	set(assembly_sources
+		${CMAKE_CURRENT_SOURCE_DIR}/assemblies/${assembly_name}.c)
 
-	foreach (dir ${arg_SUBDIRS})
-		file(GLOB dir_sources ${dir}/*.c ${dir}/*.h)
-		set(sources ${sources} ${dir_sources})
+	foreach (dir ${arg_NAMESPACES})
+		add_subdirectory(${dir})
+		set(assembly_sources ${assembly_sources} ${namespace_sources})
+		set(assembly_include_paths ${assembly_include_paths} ${namespace_include_paths})
 	endforeach (dir)
 
-	file(GLOB sys_sources sys/${fx_system_name}/*.c sys/${fx_system_name}/*.h)
-	file(GLOB headers include/${assembly_path}/*.h)
-
 	message(STATUS "Building assembly ${assembly_name}")
 	add_library(${assembly_target_name} SHARED
-		${sources}
-		${sys_sources}
-		${root_header}
-		${headers}
-		${arg_EXTRA_SOURCES})
+		${assembly_sources})
 
-	target_include_directories(${assembly_target_name} PUBLIC include/)
+	target_include_directories(${assembly_target_name} PUBLIC ${assembly_include_paths})
 
 	target_compile_definitions(${assembly_target_name} PUBLIC
-		${assembly_token}
 		FX_EXPORT=1
 		FX_ENABLE_FLOATING_POINT=${fx_enable_floating_point})
 
@@ -48,8 +40,7 @@ function(add_fx_assembly)
 		PROPERTIES POSITION_INDEPENDENT_CODE ON)
 
 	foreach (dep ${arg_DEPENDENCIES})
-		string(REPLACE "." "-" dep_target_name ${dep})
-		target_link_libraries(${assembly_target_name} ${dep_target_name})
+		target_link_libraries(${assembly_target_name} ${dep})
 	endforeach (dep)
 
 	foreach (lib ${arg_LIBS})
@@ -79,3 +70,31 @@ function(add_fx_assembly)
 	install(TARGETS ${assembly_target_name})
 	install(FILES ${headers} DESTINATION include/${assembly_path})
 endfunction(add_fx_assembly)
+
+macro(export_fx_namespace_details)
+	set(options)
+	set(one_value_args NAME)
+	set(multi_value_args)
+	cmake_parse_arguments(PARSE_ARGV 0 arg
+		"${options}"
+		"${one_value_args}"
+		"${multi_value_args}")
+
+	set(namespace_name ${arg_NAME})
+	string(REPLACE "." "/" namespace_path ${namespace_name})
+	set(namespace_target_name ${namespace_name})
+
+	set(namespace_include_paths ${CMAKE_CURRENT_SOURCE_DIR}/include PARENT_SCOPE)
+
+	file(GLOB namespace_sources
+		*.c *.h
+		${CMAKE_CURRENT_SOURCE_DIR}/include/${namespace_path}/*.h)
+	file(GLOB sys_sources sys/${fx_system_name}/*.c sys/${fx_system_name}/*.h)
+	file(GLOB headers include/${namespace_path}/*.h)
+	set(namespace_sources
+		${namespace_sources}
+		${sys_sources}
+		${headers}
+		PARENT_SCOPE)
+endmacro(export_fx_namespace_details)
+
diff --git a/fx.collections/CMakeLists.txt b/fx.collections/CMakeLists.txt
index 6afe017..e7d34d5 100644
--- a/fx.collections/CMakeLists.txt
+++ b/fx.collections/CMakeLists.txt
@@ -1,5 +1,2 @@
-include(../cmake/Templates.cmake)
-
-add_fx_assembly(
-	NAME fx.collections
-	DEPENDENCIES fx)
+export_fx_namespace_details(
+	NAME fx.collections)
diff --git a/fx.reflection/CMakeLists.txt b/fx.reflection/CMakeLists.txt
new file mode 100644
index 0000000..361da43
--- /dev/null
+++ b/fx.reflection/CMakeLists.txt
@@ -0,0 +1,6 @@
+set(namespace_include_paths ${CMAKE_CURRENT_SOURCE_DIR}/include PARENT_SCOPE)
+
+file(GLOB namespace_sources
+	*.c *.h
+	${CMAKE_CURRENT_SOURCE_DIR}/include/fx/reflection/*.h)
+set(namespace_sources ${namespace_sources} PARENT_SCOPE)
diff --git a/fx.reflection/assembly.c b/fx.reflection/assembly.c
new file mode 100644
index 0000000..034b313
--- /dev/null
+++ b/fx.reflection/assembly.c
@@ -0,0 +1,264 @@
+#include <fx/bst.h>
+#include <fx/hash.h>
+#include <fx/macros.h>
+#include <fx/queue.h>
+#include <fx/reflection/assembly.h>
+
+enum map_entry_type {
+	MAP_ENTRY_NONE = 0,
+	MAP_ENTRY_ITEM,
+	MAP_ENTRY_BUCKET,
+};
+
+struct map_entry {
+	enum map_entry_type e_type;
+	uint64_t e_hash;
+	union {
+		fx_queue_entry e_entry;
+		fx_bst_node e_node;
+	};
+};
+
+struct map_bucket {
+	struct map_entry b_entry;
+	fx_queue b_items;
+};
+
+struct map_item {
+	struct map_entry i_entry;
+	const char *i_name;
+};
+
+struct map {
+	fx_bst m_entries;
+};
+
+struct type {
+	struct map_item e_map_item;
+	fx_type e_type;
+};
+
+struct fx_assembly_p {
+	const char *a_name;
+	struct map a_types;
+
+	struct {
+		long v_major;
+		long v_minor;
+		long v_build;
+		long v_revision;
+	} a_version;
+};
+
+/*** PRIVATE FUNCTIONS ********************************************************/
+
+FX_BST_DEFINE_SIMPLE_GET(
+	struct map_entry,
+	uint64_t,
+	e_node,
+	e_hash,
+	map_get_entry);
+FX_BST_DEFINE_SIMPLE_INSERT(struct map_entry, e_node, e_hash, map_put_entry);
+
+static struct map_bucket *map_item_convert_to_bucket(
+	struct map *map,
+	struct map_item *item)
+{
+	struct map_bucket *bucket = malloc(sizeof *bucket);
+
+	memset(bucket, 0x0, sizeof *bucket);
+
+	bucket->b_entry.e_hash = item->i_entry.e_hash;
+	bucket->b_entry.e_type = MAP_ENTRY_BUCKET;
+
+	fx_bst_delete(&map->m_entries, &item->i_entry.e_node);
+	fx_queue_push_back(&bucket->b_items, &item->i_entry.e_entry);
+	map_put_entry(&map->m_entries, &bucket->b_entry);
+
+	return bucket;
+}
+
+static void map_put(struct map *map, const char *name, struct map_item *item)
+{
+	uint64_t hash = fx_hash_cstr(name);
+
+	item->i_entry.e_type = MAP_ENTRY_ITEM;
+	item->i_entry.e_hash = hash;
+	item->i_name = name;
+
+	struct map_entry *entry = map_get_entry(&map->m_entries, hash);
+	if (!entry) {
+		map_put_entry(&map->m_entries, &item->i_entry);
+		return;
+	}
+
+	struct map_item *existing_item = NULL;
+	struct map_bucket *bucket = NULL;
+	switch (entry->e_type) {
+	case MAP_ENTRY_ITEM:
+		existing_item = (struct map_item *)entry;
+		bucket = map_item_convert_to_bucket(map, existing_item);
+		fx_queue_push_back(&bucket->b_items, &item->i_entry.e_entry);
+		break;
+	case MAP_ENTRY_BUCKET:
+		bucket = (struct map_bucket *)entry;
+		fx_queue_push_back(&bucket->b_items, &item->i_entry.e_entry);
+		break;
+	default:
+		break;
+	}
+}
+
+static void assembly_set_name(struct fx_assembly_p *asm, const char *name)
+{
+	asm->a_name = name;
+}
+
+static void assembly_set_version(
+	struct fx_assembly_p *asm,
+	long major,
+	long minor,
+	long build,
+	long revision)
+{
+	asm->a_version.v_major = major;
+	asm->a_version.v_minor = minor;
+	asm->a_version.v_build = build;
+	asm->a_version.v_revision = revision;
+}
+
+#include <stdio.h>
+static void assembly_add_type(
+	struct fx_assembly_p *asm,
+	const char *full_name,
+	fx_type type_id)
+{
+	struct type *type = malloc(sizeof *type);
+	memset(type, 0x0, sizeof *type);
+
+	map_put(&asm->a_types, full_name, &type->e_map_item);
+}
+
+static void map_item_dump(struct map_item *item)
+{
+	struct type *type = (struct type *)item;
+	printf("  Type: %s\n", type->e_map_item.i_name);
+}
+
+static void assembly_dump(struct fx_assembly_p *asm)
+{
+	printf("Loaded assembly:\n");
+	printf("  %s, Version=%ld.%ld.%ld.%ld\n",
+	       asm->a_name,
+	       asm->a_version.v_major,
+	       asm->a_version.v_minor,
+	       asm->a_version.v_build,
+	       asm->a_version.v_revision);
+
+	fx_bst_node *cur_node = fx_bst_first(&asm->a_types.m_entries);
+	while (cur_node) {
+		struct map_entry *entry
+			= fx_unbox(struct map_entry, cur_node, e_node);
+		switch (entry->e_type) {
+		case MAP_ENTRY_ITEM: {
+			struct map_item *item = (struct map_item *)entry;
+			map_item_dump(item);
+			break;
+		}
+
+		case MAP_ENTRY_BUCKET: {
+			struct map_bucket *bucket = (struct map_bucket *)entry;
+			fx_queue_entry *cur_qentry
+				= fx_queue_first(&bucket->b_items);
+			while (cur_qentry) {
+				struct map_item *item = fx_unbox(
+					struct map_item,
+					cur_qentry,
+					i_entry.e_entry);
+				map_item_dump(item);
+				cur_qentry = fx_queue_next(cur_qentry);
+			}
+		}
+		default:
+			break;
+		}
+
+		cur_node = fx_bst_next(cur_node);
+	}
+}
+
+/*** PUBLIC FUNCTIONS *********************************************************/
+
+void fx_assembly_set_name(fx_assembly *asm, const char *name)
+{
+	FX_CLASS_DISPATCH_STATIC_V(
+		FX_REFLECTION_TYPE_ASSEMBLY,
+		assembly_set_name,
+		asm,
+		name);
+}
+
+void fx_assembly_set_version(
+	fx_assembly *asm,
+	long major,
+	long minor,
+	long build,
+	long revision)
+{
+	FX_CLASS_DISPATCH_STATIC_V(
+		FX_REFLECTION_TYPE_ASSEMBLY,
+		assembly_set_version,
+		asm,
+		major,
+		minor,
+		build,
+		revision);
+}
+
+void fx_assembly_add_type(
+	fx_assembly *asm,
+	const char *full_name,
+	fx_type type_id)
+{
+	FX_CLASS_DISPATCH_STATIC_V(
+		FX_REFLECTION_TYPE_ASSEMBLY,
+		assembly_add_type,
+		asm,
+		full_name,
+		type_id);
+}
+
+void fx_assembly_dump(const fx_assembly *asm)
+{
+	FX_CLASS_DISPATCH_STATIC_0(
+		FX_REFLECTION_TYPE_ASSEMBLY,
+		assembly_dump,
+		asm);
+}
+
+/*** VIRTUAL FUNCTIONS ********************************************************/
+
+static void assembly_init(fx_object *obj, void *priv)
+{
+}
+
+static void assembly_fini(fx_object *obj, void *priv)
+{
+}
+
+/*** CLASS DEFINITION *********************************************************/
+
+// ---- fx_string DEFINITION
+FX_TYPE_CLASS_DEFINITION_BEGIN(fx_assembly)
+	FX_TYPE_CLASS_INTERFACE_BEGIN(fx_object, FX_TYPE_OBJECT)
+		FX_INTERFACE_ENTRY(to_string) = NULL;
+	FX_TYPE_CLASS_INTERFACE_END(fx_object, FX_TYPE_OBJECT)
+FX_TYPE_CLASS_DEFINITION_END(fx_assembly)
+
+FX_TYPE_DEFINITION_BEGIN(fx_assembly)
+	FX_TYPE_ID(0xf6690c30, 0x6642, 0x42f0, 0xb79f, 0xe2baf3684b1b);
+	FX_TYPE_CLASS(fx_assembly_class);
+	FX_TYPE_INSTANCE_PRIVATE(struct fx_assembly_p);
+	FX_TYPE_INSTANCE_INIT(assembly_init);
+	FX_TYPE_INSTANCE_FINI(assembly_fini);
+FX_TYPE_DEFINITION_END(fx_assembly)
diff --git a/fx.reflection/include/fx/reflection/assembly.h b/fx.reflection/include/fx/reflection/assembly.h
new file mode 100644
index 0000000..73f2777
--- /dev/null
+++ b/fx.reflection/include/fx/reflection/assembly.h
@@ -0,0 +1,37 @@
+#ifndef FX_REFLECTION_ASSEMBLY_H_
+#define FX_REFLECTION_ASSEMBLY_H_
+
+#include <fx/macros.h>
+
+FX_DECLS_BEGIN;
+
+#define FX_REFLECTION_TYPE_ASSEMBLY (fx_assembly_get_type())
+
+FX_DECLARE_TYPE(fx_assembly);
+
+FX_TYPE_CLASS_DECLARATION_BEGIN(fx_assembly)
+FX_TYPE_CLASS_DECLARATION_END(fx_assembly)
+
+FX_API fx_type fx_assembly_get_type();
+
+FX_TYPE_DEFAULT_CONSTRUCTOR(fx_assembly, FX_REFLECTION_TYPE_ASSEMBLY);
+
+FX_API void fx_assembly_set_name(fx_assembly *asm, const char *name);
+FX_API void fx_assembly_set_version(
+	fx_assembly *asm,
+	long major,
+	long minor,
+	long build,
+	long revision);
+
+FX_API void fx_assembly_add_type(
+	fx_assembly *asm,
+	const char *full_name,
+	fx_type type_id);
+
+FX_API void fx_assembly_dump(const fx_assembly *asm);
+
+FX_DECLS_END
+;
+
+#endif
diff --git a/fx/CMakeLists.txt b/fx/CMakeLists.txt
index 859cede..f6bb034 100644
--- a/fx/CMakeLists.txt
+++ b/fx/CMakeLists.txt
@@ -1,5 +1,7 @@
-include(../cmake/Templates.cmake)
+set(namespace_include_paths ${CMAKE_CURRENT_SOURCE_DIR}/include PARENT_SCOPE)
 
-add_fx_assembly(
-	NAME fx
-	SUBDIRS hash)
+file(GLOB namespace_sources
+	*.c *.h
+	hash/*.c hash/*.h
+	${CMAKE_CURRENT_SOURCE_DIR}/include/fx/*.h)
+set(namespace_sources ${namespace_sources} PARENT_SCOPE)
diff --git a/fx/include/fx/macros.h b/fx/include/fx/macros.h
index 4a6a706..0d3466f 100644
--- a/fx/include/fx/macros.h
+++ b/fx/include/fx/macros.h
@@ -200,6 +200,28 @@
 		func_name(priv);                                               \
 	} while (0)
 
+#define FX_ASSEMBLY_BEGIN()                                                    \
+	const fx_assembly *__fx_assembly_get(void)                             \
+	{                                                                      \
+		static fx_assembly *self = NULL;                               \
+		if (self) {                                                    \
+			return self;                                           \
+		}                                                              \
+		self = fx_assembly_create();
+#define FX_ASSEMBLY_END()                                                      \
+	fx_assembly_dump(self);                                                \
+	return self;                                                           \
+	}
+#define FX_ASSEMBLY_NAME(name) fx_assembly_set_name(self, name)
+#define FX_ASSEMBLY_VERSION(major, minor, build, revision)                     \
+	fx_assembly_set_version(self, major, minor, build, revision)
+#define FX_ASSEMBLY_EXPORT_TYPE(namespace_name, type_name, type_id)            \
+	extern fx_type type_id##_get_type(void);                               \
+	fx_assembly_add_type(                                                  \
+		self,                                                          \
+		namespace_name "." type_name,                                  \
+		type_id##_get_type())
+
 #ifdef __cplusplus
 #define FX_DECLS_BEGIN extern "C" {
 #define FX_DECLS_END   }
diff --git a/fx/type.h b/fx/type.h
index bfa51ea..fa8c3f5 100644
--- a/fx/type.h
+++ b/fx/type.h
@@ -24,6 +24,7 @@ struct fx_type_component {
 
 struct fx_type_registration {
 	enum fx_type_category r_category;
+	const char *r_name;
 	struct fx_bst_node r_node;
 	const fx_type_info *r_info;
 	struct _fx_class *r_class;
@@ -35,6 +36,7 @@ struct fx_type_registration {
 
 extern struct fx_type_registration *fx_type_get_registration(fx_type id);
 extern struct fx_type_component *fx_type_get_component(
-	const fx_bst *tree, const union fx_type *key);
+	const fx_bst *tree,
+	const union fx_type *key);
 
 #endif
diff --git a/test/dynamic-test.c b/test/dynamic-test.c
new file mode 100644
index 0000000..e7f3d2c
--- /dev/null
+++ b/test/dynamic-test.c
@@ -0,0 +1,22 @@
+#include <dlfcn.h>
+#include <stdio.h>
+
+int main(int argc, const char **argv)
+{
+	printf("dynamic loader\n");
+	void *assembly = dlopen(argv[1], RTLD_LAZY);
+	if (!assembly) {
+		printf("cannot load %s\n", argv[1]);
+		return -1;
+	}
+
+	const void *(*asm_info)(void) = dlsym(assembly, "__fx_assembly_get");
+	if (!asm_info) {
+		printf("cannot find assembly info for %s", argv[1]);
+		return -1;
+	}
+
+	asm_info();
+	printf("OK\n");
+	return 0;
+}