diff --git a/src/main.c3 b/src/main.c3
index 7fce951..26f95c2 100644
--- a/src/main.c3
+++ b/src/main.c3
@@ -6,6 +6,7 @@ import std::encoding::json;
 import std::time;
 
 import conf;
+import vm;
 import ugui;
 import ugui::sdl::ren;
 
@@ -21,13 +22,6 @@ const bool VSYNC = true;
 
 fn int main(String[] args)
 {
-	String path = args[1];
-	File file = file::open(path, "r")!!;
-
-	// load configuration in memory as an object
-	Object* conf = json::parse(mem, &file)!!;
-	defer conf.free();
-
 	// ---------------------------------------------- UI initialization ---------------------------------------------- //
 	ArenaAllocator arena;
 	char[] arena_mem = mem::new_array(char, 1024*1024);
@@ -61,72 +55,53 @@ fn int main(String[] args)
 	ren::pre(ren.win);
 	// -------------------------------------------- End UI initialization -------------------------------------------- //
 
-	StrList cmd = conf::get_qemu_cmdline(mem, conf)!!;
-	defer cmd.free();
-	String vm_name = conf.get_string("name")!!;
-	String vm_disk = conf.get_string("disk").to_expanded_path(tmem).str_view()!!;
-	String vm_disk_size = bytes_to_human_readable(tmem, file::get_size(vm_disk))!!;
-
-	bool vm_on = false;
-	SubProcess vm_proc;
-	defer (void)vm_proc.join();
 
 	ConfFList conf_list = conf::get_config_list(tmem)!!;
+	VMList vm_list;
+	vm_list.init(tmem);
+	io::printn("Configurations found:");
 	foreach (cf : conf_list) {
 		io::printn(cf);
+		vm_list.push(vm::new_from_path(tmem, cf.path))!!;
 	}
 
 	bool quit;
 	Clock sleep_clock;
-	while (!quit) {
+	while (!quit) @pool() {
 		sleep_clock.mark();
 		quit = ui.handle_events()!!;
-		vm_on = vm_proc.is_running()!!;
 
 		/* Start UI Handling */
 		ui.frame_begin()!!;
 
 		if (ui.check_key_combo(ugui::KMOD_CTRL, "q")) quit = true;
 
-		ui.@div(ugui::@grow(), ugui::@grow(), COLUMN) {
-			ui.@div(ugui::@grow(), ugui::@fit(20), ROW, LEFT) {
-				ui.text("Machine:")!!;
-				ui.separator(ugui::@grow(), ugui::@grow())!!;
-				ui.text(vm_name)!!;
-
-				static bool popup;
-				static Point popup_pos;
-				if (ui.button("v")!!.mouse_release) {
-					popup = true;
-					popup_pos = ui.input.mouse.pos;
+		static usz which_vm = 0;
+		ui.@div(ugui::@grow(), ugui::@grow()) {
+			ui.@div(ugui::@fit((short)(ui.width*0.3)), ugui::@grow(), COLUMN, scroll_x: true, scroll_y: true) {
+				foreach_r (idx, &vm : vm_list) {
+					Id id = ui.@div(ugui::@grow(), ugui::@fit(50), ROW, LEFT, false,{},false,false, idx) {
+						ui.text(vm.name, idx)!!;
+						ui.separator(ugui::@grow(), ugui::@exact(1), idx)!!;
+						if (vm.is_running()) {
+							if (ui.button("stop", "", idx)!!.mouse_release) vm.stop()!!;
+						} else {
+							if (ui.button("start", "", idx)!!.mouse_release) vm.start()!!;
+						}
+					}!!;
+					ui.hor_line(idx)!!;
+					if (ui.focus_id == id) which_vm = idx;
 				}
-				ui.@popup(&popup, popup_pos, ugui::@fit(), ugui::@fit(), COLUMN) {
-					foreach (idx, c : conf_list) {
-						ui.text(c.name, idx)!!;
-					}
-				}!!;
-
 			}!!;
-			ui.hor_line()!!;
-			ui.@div(ugui::@grow(), ugui::@grow(), COLUMN, scroll_y: true) {
-				ui.text(string::tformat("disk: %s (%s)", vm_disk, vm_disk_size))!!;
-				ui.text(string::tformat("runner: %s", conf.get_string("qemu")))!!;
-				ui.text(string::tformat("memory: %s", conf.get_string("memory")))!!;
-				ui.text(string::tformat("processors: %s", conf.get_string("processors")))!!;
-			}!!;
-			ui.hor_line()!!;
-			ui.@div(ugui::@grow(), ugui::@fit(), ROW) {
-				if (!vm_on) {
-					if (ui.button("START")!!.mouse_release) {
-						vm_proc = process::create(cmd.array_view(), {.inherit_stdio=true, .inherit_environment=true})!!;
-						vm_on = true;
-					}
-				} else {
-					if (ui.button("STOP")!!.mouse_release) {
-						vm_proc.terminate()!!;
-						vm_on = false;
-					}
-				}
+			ui.ver_line()!!;
+			ui.@div(ugui::@grow(), ugui::@grow(), COLUMN, scroll_x: true, scroll_y: true) {
+				// TODO: implement a "selectable div" to display the information of the right vm
+				VirtualMachineDesc* vm = &vm_list[which_vm];
+				ui.text(string::tformat("Name: %s", vm.name))!!;
+				ui.text(string::tformat("Disk: %s (%s)", vm.disk_path.str_view(), bytes_to_human_readable(tmem, file::get_size(vm.disk_path.str_view()))))!!;
+				ui.text(string::tformat("Runner: %s", vm.config.get_string("qemu")))!!;
+				ui.text(string::tformat("Memory: %s", vm.config.get_string("memory")))!!;
+				ui.text(string::tformat("Processors: %s", vm.config.get_string("processors")))!!;
 			}!!;
 		}!!;
 
@@ -143,7 +118,7 @@ fn int main(String[] args)
 		int timeout = LIMIT_FPS ? (int)(100.0-sleep_clock.mark().to_ms()-0.5) : 0;
 		if (ui.skip_frame) timeout = 0;
 		ren::wait_events(timeout);
-	}
+	};
 
 	return 0;
 }
diff --git a/src/vm.c3 b/src/vm.c3
index 8ff9144..71f6feb 100644
--- a/src/vm.c3
+++ b/src/vm.c3
@@ -4,6 +4,7 @@ import std::io::file;
 import std::os::process;
 import std::collections::object;
 import std::encoding::json;
+import std::collections::list;
 import conf;
 
 
@@ -17,6 +18,9 @@ struct VirtualMachineDesc {
 }
 
 
+alias VMList = list::List{VirtualMachineDesc};
+
+
 fn VirtualMachineDesc? new_from_path(Allocator allocator, Path path)
 {
 	VirtualMachineDesc desc;