diff --git a/.gitmodules b/.gitmodules
index d9c0b91..d81c7b0 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -4,9 +4,6 @@
 [submodule "glm"]
 	path = glm
 	url = https://github.com/g-truc/glm.git
-[submodule "picojson"]
-	path = picojson
-	url = https://github.com/kazuho/picojson.git
 [submodule "ebcl"]
 	path = ebcl
 	url = ssh://git@git.nocternity.net:44/u/tseeker/libs/corelib
diff --git a/.vim.local/ycm_extra_conf.py b/.vim.local/ycm_extra_conf.py
index b4ecac1..3fb74bd 100644
--- a/.vim.local/ycm_extra_conf.py
+++ b/.vim.local/ycm_extra_conf.py
@@ -47,7 +47,6 @@ flags = [
     '-I','.',
     '-I','imgui',
     '-I','glm',
-    '-I','picojson',
     '-I','ebcl/include',
     '-I','/usr/include/SDL2' ,
     '-D','GLM_ENABLE_EXPERIMENTAL',
diff --git a/Makefile b/Makefile
index 4434f8b..d45d2ed 100644
--- a/Makefile
+++ b/Makefile
@@ -3,7 +3,7 @@ OUTDIR = output
 CXXFLAGS += $(shell sdl2-config --cflags) -std=c++14 -Wall -g
 CFLAGS += $(shell sdl2-config --cflags)
 CPPFLAGS += -I. -I$(OUTDIR) \
-	    -Iimgui -Iglm -Ipicojson -Iebcl/include \
+	    -Iimgui -Iglm -Iebcl/include \
 	    -DREAL_BUILD -DGLM_ENABLE_EXPERIMENTAL
 LIBS += $(shell sdl2-config --libs) -lGL -lGLEW -ldl \
 	$(LIBEBCL) -latomic
diff --git a/externals.hh b/externals.hh
index 617ffff..ec70fdd 100644
--- a/externals.hh
+++ b/externals.hh
@@ -32,9 +32,6 @@ using std::swap;
 #include <glm/mat3x3.hpp>
 #include <glm/gtx/euler_angles.hpp>
 
-// PicoJSON
-#include <picojson.h>
-
 // EBCL
 #include <ebcl/Arrays.hh>
 #include <ebcl/Strings.hh>
diff --git a/picojson b/picojson
deleted file mode 160000
index 1ebfc7b..0000000
--- a/picojson
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 1ebfc7b998fed25c48b4c14c0907bda74ead42c5
diff --git a/utilities.cc b/utilities.cc
index cb41ace..0461844 100644
--- a/utilities.cc
+++ b/utilities.cc
@@ -69,93 +69,3 @@ T_String GetParentPath(
 	free( rp );
 	return rv;
 }
-
-
-/*= JSON =====================================================================*/
-
-template void jsonAdd< double >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		double const& v );
-template void jsonAdd< T_JSONObject >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		T_JSONObject const& v );
-template void jsonAdd< T_JSONArray >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		T_JSONArray const& v );
-template void jsonAdd< std::string >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		std::string const& v );
-
-template< >
-void jsonAdd< picojson::value >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		picojson::value const& v )
-{
-	using T_Entry = std::pair< std::string , picojson::value >;
-	object.insert( T_Entry( key , v ) );
-}
-
-template< >
-void jsonAdd< int >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		int const& v )
-{
-	using T_Entry = std::pair< std::string , picojson::value >;
-	object.insert( T_Entry( key , picojson::value( double( v ) ) ) );
-}
-
-template< >
-void jsonAdd< unsigned >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		unsigned const& v )
-{
-	using T_Entry = std::pair< std::string , picojson::value >;
-	object.insert( T_Entry( key , picojson::value( double( v ) ) ) );
-}
-
-/*----------------------------------------------------------------------------*/
-
-picojson::value jsonVector( float const* vector , const int nComponents )
-{
-	using namespace picojson;
-	value::array a;
-	for ( auto i = 0 ; i < nComponents ; i ++ ) {
-		a.push_back( value( vector[ i ] ) );
-	}
-	return value( a );
-}
-
-/*----------------------------------------------------------------------------*/
-
-void jsonGetVectorOpt(
-		float* vector ,
-		const size_t size ,
-		T_JSONObject const& object ,
-		char const* key )
-{
-	using namespace picojson;
-	auto const* ptr( jsonGetOpt< array >( object , key ) );
-	if ( !ptr ) {
-		return;
-	}
-
-	auto const& a( *ptr );
-	if ( a.size( ) != size ) {
-		throw X_JsonGetFailed( );
-	}
-
-	int i = 0;
-	for ( auto const& av : a ) {
-		if ( !av.is< double >( ) ) {
-			throw X_JsonGetFailed( );
-		}
-		vector[ i ++ ] = float( av.get< double >( ) );
-	}
-}
diff --git a/utilities.hh b/utilities.hh
index 0d3f881..20cabfe 100644
--- a/utilities.hh
+++ b/utilities.hh
@@ -76,199 +76,3 @@ std::string GetAbsolutePath(
 // Get the absolute parent path for a (possibly relative) path
 std::string GetParentPath(
 		std::string const& path );
-
-
-/*= JSON utilities ===========================================================*/
-
-using T_JSONObject = picojson::value::object;
-using T_JSONArray = picojson::value::array;
-
-// Convert a vector to a JSON array
-picojson::value jsonVector(
-		float const* vector ,
-		const int nComponents );
-
-// Convert a GLM vec3 to a JSON array
-inline picojson::value jsonVector(
-		glm::vec3 const& vector )
-{
-	return jsonVector( &vector.x , 3 );
-}
-
-// Add an entry to a JSON object
-template< typename T >
-inline void jsonAdd(
-		T_JSONObject& object ,
-		std::string const& key ,
-		T const& v )
-{
-	using T_Entry = std::pair< std::string , picojson::value >;
-	object.insert( T_Entry( key , picojson::value( v ) ) );
-}
-
-extern template void jsonAdd< double >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		double const& v );
-extern template void jsonAdd< T_JSONObject >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		T_JSONObject const& v );
-extern template void jsonAdd< T_JSONArray >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		T_JSONArray const& v );
-extern template void jsonAdd< std::string >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		std::string const& v );
-
-template< >
-void jsonAdd< picojson::value >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		picojson::value const& v );
-template< >
-void jsonAdd< int >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		int const& v );
-template< >
-void jsonAdd< unsigned >(
-		T_JSONObject& object ,
-		std::string const& key ,
-		unsigned const& v );
-
-/*----------------------------------------------------------------------------*/
-
-// JSON read type error
-class X_JsonGetFailed : public std::exception { };
-
-// Get a JSON object field; throws X_JsonGetFailed if the type is incorrect or
-// if the field is missing.
-template< typename T >
-inline T const& jsonGet(
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	const std::string k( key );
-	if ( object.find( k ) == object.end( ) ) {
-		throw X_JsonGetFailed( );
-	}
-
-	picojson::value const& v( object.at( k ) );
-	if ( !v.is< T >( ) ) {
-		throw X_JsonGetFailed( );
-	}
-	return v.get< T >( );
-}
-
-// Get a pointer to a JSON object field, or nullptr if the field doesn't exist.
-// Throws X_JsonGetFailed if the type is incorrect.
-template< typename T >
-inline T const* jsonGetOpt(
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	const std::string k( key );
-	if ( object.find( k ) == object.end( ) ) {
-		return nullptr;
-	}
-
-	picojson::value const& v( object.at( k ) );
-	if ( !v.is< T >( ) ) {
-		throw X_JsonGetFailed( );
-	}
-	return &v.get< T >( );
-}
-
-// Read a value from a JSON object, if the value actually exists. Fails with
-// X_JsonGetFailed if the type is wrong
-template< typename T >
-inline bool jsonSetFromOpt(
-		T& out ,
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	T const* ptr( jsonGetOpt< T >( object , key ) );
-	if ( ptr ) {
-		out = *ptr;
-	}
-	return ptr;
-}
-
-// Integer specialization of the above
-template< >
-inline bool jsonSetFromOpt< int >(
-		int& out ,
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	double const* ptr( jsonGetOpt< double >( object , key ) );
-	if ( ptr ) {
-		out = int( *ptr );
-	}
-	return ptr;
-}
-
-// Unsigned integer specialization of the above
-template< >
-inline bool jsonSetFromOpt< unsigned >(
-		unsigned& out ,
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	double const* ptr( jsonGetOpt< double >( object , key ) );
-	if ( ptr ) {
-		out = unsigned( *ptr );
-	}
-	return ptr;
-}
-
-// 32-bit float specialization of the above
-template< >
-inline bool jsonSetFromOpt< float >(
-		float& out ,
-		T_JSONObject const& object ,
-		char const* const key )
-{
-	double const* ptr( jsonGetOpt< double >( object , key ) );
-	if ( ptr ) {
-		out = float( *ptr );
-	}
-	return ptr;
-}
-
-// Read a vector from a JSON array of numbers
-void jsonGetVectorOpt(
-		float* vector ,
-		const size_t size ,
-		T_JSONObject const& object ,
-		char const* key );
-
-// Read a GLM vec3 from a JSON array of numbers
-inline void jsonGetVectorOpt(
-		glm::vec3& vector ,
-		T_JSONObject const& object ,
-		char const* key )
-{
-	jsonGetVectorOpt( &vector.x , 3 , object , key );
-}
-
-// Try to load some object using its "bool load( jsonobject )" method.
-template< typename T >
-inline bool jsonLoadOpt(
-		T& out ,
-		T_JSONObject const& object ,
-		char const* key )
-{
-	try {
-		auto const* sub( jsonGetOpt< T_JSONObject >( object , key ) );
-		if ( sub ) {
-			return out.load( *sub );
-		}
-		return true;
-	} catch ( X_JsonGetFailed const& ) {
-		return false;
-	}
-}