diff --git a/src/gui/doAction.cpp b/src/gui/doAction.cpp
index b86a50de3..168acee83 100644
--- a/src/gui/doAction.cpp
+++ b/src/gui/doAction.cpp
@@ -319,6 +319,9 @@ void FurnaceGUI::doAction(int what) {
     case GUI_ACTION_WINDOW_CS_PLAYER:
       nextWindow=GUI_WINDOW_CS_PLAYER;
       break;
+    case GUI_ACTION_WINDOW_USER_PRESETS:
+      nextWindow=GUI_WINDOW_USER_PRESETS;
+      break;
     
     case GUI_ACTION_COLLAPSE_WINDOW:
       collapseWindow=true;
@@ -424,6 +427,8 @@ void FurnaceGUI::doAction(int what) {
         case GUI_WINDOW_CS_PLAYER:
           csPlayerOpen=false;
           break;
+        case GUI_WINDOW_USER_PRESETS:
+          userPresetsOpen=false;
         default:
           break;
       }
diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 343cbd151..75d660366 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -3479,6 +3479,7 @@ bool FurnaceGUI::loop() {
   DECLARE_METRIC(regView)
   DECLARE_METRIC(log)
   DECLARE_METRIC(effectList)
+  DECLARE_METRIC(userPresets)
   DECLARE_METRIC(popup)
 
 #ifdef IS_MOBILE
@@ -4051,6 +4052,7 @@ bool FurnaceGUI::loop() {
         IMPORT_CLOSE(xyOscOpen);
         IMPORT_CLOSE(memoryOpen);
         IMPORT_CLOSE(csPlayerOpen);
+        IMPORT_CLOSE(userPresetsOpen);
       } else if (pendingLayoutImportStep==1) {
         // let the UI settle
       } else if (pendingLayoutImportStep==2) {
@@ -4383,6 +4385,9 @@ bool FurnaceGUI::loop() {
           toggleMobileUI(!mobileUI);
         }
 #endif
+        if (ImGui::MenuItem("manage presets...",BIND_FOR(GUI_ACTION_WINDOW_USER_PRESETS))) {
+          userPresetsOpen=true;
+        }
         if (ImGui::MenuItem("settings...",BIND_FOR(GUI_ACTION_WINDOW_SETTINGS))) {
           syncSettings();
           settingsOpen=true;
@@ -4664,6 +4669,7 @@ bool FurnaceGUI::loop() {
       MEASURE(grooves,drawGrooves());
       MEASURE(regView,drawRegView());
       MEASURE(memory,drawMemory());
+      MEASURE(userPresets,drawUserPresets());
     } else {
       globalWinFlags=0;
       ImGui::DockSpaceOverViewport(NULL,lockLayout?(ImGuiDockNodeFlags_NoWindowMenuButton|ImGuiDockNodeFlags_NoMove|ImGuiDockNodeFlags_NoResize|ImGuiDockNodeFlags_NoCloseButton|ImGuiDockNodeFlags_NoDocking|ImGuiDockNodeFlags_NoDockingSplitMe|ImGuiDockNodeFlags_NoDockingSplitOther):0);
@@ -4706,6 +4712,7 @@ bool FurnaceGUI::loop() {
       MEASURE(regView,drawRegView());
       MEASURE(log,drawLog());
       MEASURE(effectList,drawEffectList());
+      MEASURE(userPresets,drawUserPresets());
     }
 
     // NEW CODE - REMOVE WHEN DONE
@@ -6610,6 +6617,7 @@ bool FurnaceGUI::init() {
   subSongsOpen=e->getConfBool("subSongsOpen",true);
   findOpen=e->getConfBool("findOpen",false);
   spoilerOpen=e->getConfBool("spoilerOpen",false);
+  userPresetsOpen=e->getConfBool("userPresetsOpen",false);
 
   insListDir=e->getConfBool("insListDir",false);
   waveListDir=e->getConfBool("waveListDir",false);
@@ -7007,6 +7015,8 @@ bool FurnaceGUI::init() {
   ImGui::CreateContext();
   rend->initGUI(sdlWin);
 
+  loadUserPresets(true);
+
   // NEW CODE - REMOVE WHEN DONE
   newOscFragment=rend->getStupidFragment();
 
@@ -7169,6 +7179,7 @@ void FurnaceGUI::commitState() {
   e->setConf("subSongsOpen",subSongsOpen);
   e->setConf("findOpen",findOpen);
   e->setConf("spoilerOpen",spoilerOpen);
+  e->setConf("userPresetsOpen",userPresetsOpen);
 
   // commit dir state
   e->setConf("insListDir",insListDir);
@@ -7271,6 +7282,9 @@ void FurnaceGUI::commitState() {
 
 bool FurnaceGUI::finish(bool saveConfig) {
   commitState();
+  if (userPresetsOpen) {
+    saveUserPresets(true);
+  }
   if (saveConfig) {
     logI("saving config.");
     e->saveConf();
@@ -7521,6 +7535,7 @@ FurnaceGUI::FurnaceGUI():
   xyOscOpen(false),
   memoryOpen(false),
   csPlayerOpen(false),
+  userPresetsOpen(false),
   shortIntro(false),
   insListDir(false),
   waveListDir(false),
diff --git a/src/gui/gui.h b/src/gui/gui.h
index f73f7fed0..5c39105df 100644
--- a/src/gui/gui.h
+++ b/src/gui/gui.h
@@ -485,6 +485,7 @@ enum FurnaceGUIWindows {
   GUI_WINDOW_INTRO_MON,
   GUI_WINDOW_MEMORY,
   GUI_WINDOW_CS_PLAYER,
+  GUI_WINDOW_USER_PRESETS,
   GUI_WINDOW_SPOILER
 };
 
@@ -677,6 +678,7 @@ enum FurnaceGUIActions {
   GUI_ACTION_WINDOW_XY_OSC,
   GUI_ACTION_WINDOW_MEMORY,
   GUI_ACTION_WINDOW_CS_PLAYER,
+  GUI_ACTION_WINDOW_USER_PRESETS,
 
   GUI_ACTION_COLLAPSE_WINDOW,
   GUI_ACTION_CLOSE_WINDOW,
@@ -2081,7 +2083,7 @@ class FurnaceGUI {
   bool mixerOpen, debugOpen, inspectorOpen, oscOpen, volMeterOpen, statsOpen, compatFlagsOpen;
   bool pianoOpen, notesOpen, channelsOpen, regViewOpen, logOpen, effectListOpen, chanOscOpen;
   bool subSongsOpen, findOpen, spoilerOpen, patManagerOpen, sysManagerOpen, clockOpen, speedOpen;
-  bool groovesOpen, xyOscOpen, memoryOpen, csPlayerOpen;
+  bool groovesOpen, xyOscOpen, memoryOpen, csPlayerOpen, userPresetsOpen;
 
   bool shortIntro;
   bool insListDir, waveListDir, sampleListDir;
@@ -2610,6 +2612,7 @@ class FurnaceGUI {
   void drawClock();
   void drawTutorial();
   void drawXYOsc();
+  void drawUserPresets();
 
   void parseKeybinds();
   void promptKey(int which);
diff --git a/src/gui/guiConst.cpp b/src/gui/guiConst.cpp
index 08b84dc1f..3c15519b7 100644
--- a/src/gui/guiConst.cpp
+++ b/src/gui/guiConst.cpp
@@ -610,6 +610,7 @@ const FurnaceGUIActionDef guiActions[GUI_ACTION_MAX]={
   D("WINDOW_XY_OSC", "Oscilloscope (X-Y)", 0),
   D("WINDOW_MEMORY", "Memory Composition", 0),
   D("WINDOW_CS_PLAYER", "Command Stream Player", 0),
+  D("WINDOW_USER_PRESETS", "User Presets", 0),
 
   D("COLLAPSE_WINDOW", "Collapse/expand current window", 0),
   D("CLOSE_WINDOW", "Close current window", FURKMOD_SHIFT|SDLK_ESCAPE),
diff --git a/src/gui/presets.cpp b/src/gui/presets.cpp
index 9cb370b4f..c114c26ea 100644
--- a/src/gui/presets.cpp
+++ b/src/gui/presets.cpp
@@ -21,6 +21,7 @@
 #include "../baseutils.h"
 #include "../fileutils.h"
 #include <fmt/printf.h>
+#include <imgui.h>
 
 // add system configurations here.
 // every entry is written in the following format:
@@ -3164,6 +3165,20 @@ FurnaceGUISysDef::FurnaceGUISysDef(const char* n, const char* def, DivEngine* e)
 #define REDUNDANCY_NUM_ATTEMPTS 5
 #define CHECK_BUF_SIZE 8192
 
+std::vector<FurnaceGUISysDef>* digDeep(std::vector<FurnaceGUISysDef>& entries, int depth) {
+  if (depth==0) return &entries;
+  std::vector<FurnaceGUISysDef>& result=entries;
+
+  for (int i=0; i<depth; i++) {
+    if (result.empty()) {
+      logW("digDeep: %d is as far as it goes!",depth);
+      break;
+    }
+    result=result.at(result.size()).subDefs;
+  }
+  return &result;
+}
+
 bool FurnaceGUI::loadUserPresets(bool redundancy) {
   String path=e->getConfigPath()+PRESETS_FILE;
   String line;
@@ -3231,13 +3246,13 @@ bool FurnaceGUI::loadUserPresets(bool redundancy) {
 
     // we couldn't read at all
     if (f==NULL) {
-      logD("config does not exist");
+      logD("presets file does not exist");
       return false;
     }
   } else {
     f=ps_fopen(path.c_str(),"rb");
     if (f==NULL) {
-      logD("config does not exist");
+      logD("presets file does not exist");
       return false;
     }
   }
@@ -3258,6 +3273,8 @@ bool FurnaceGUI::loadUserPresets(bool redundancy) {
     return false;
   }
 
+  userCategory->systems.clear();
+
   char nextLine[4096];
   while (!feof(f)) {
     if (fgets(nextLine,4095,f)==NULL) {
@@ -3289,10 +3306,11 @@ bool FurnaceGUI::loadUserPresets(bool redundancy) {
         }
       }
     }
+    indent>>=1;
 
-    // TODO: nesting
     if (!key.empty() && !value.empty()) {
-      userCategory->systems.push_back(FurnaceGUISysDef(key.c_str(),value.c_str(),e));
+      std::vector<FurnaceGUISysDef>* where=digDeep(userCategory->systems,indent);
+      where->push_back(FurnaceGUISysDef(key.c_str(),value.c_str(),e));
     }
   }
 
@@ -3300,6 +3318,109 @@ bool FurnaceGUI::loadUserPresets(bool redundancy) {
   return true;
 }
 
+void writeSubEntries(FILE* f, std::vector<FurnaceGUISysDef>& entries, int depth) {
+  for (FurnaceGUISysDef& i: entries) {
+    String safeName;
+    safeName.reserve(i.name.size());
+    bool beginning=false;
+    for (char j: i.name) {
+      if (beginning && j==' ') continue;
+      if (j=='=') continue;
+      if (j<0x20) continue;
+      safeName+=j;
+    }
+    
+    String data;
+    for (int i=0; i<depth; i++) {
+      data+="  ";
+    }
+    data+=fmt::sprintf("%s=%s\n",safeName,i.definition);
+    fputs(data.c_str(),f);
+
+    writeSubEntries(f,i.subDefs,depth+1);
+  }
+}
+
 bool FurnaceGUI::saveUserPresets(bool redundancy) {
+  String path=e->getConfigPath()+PRESETS_FILE;
+  FurnaceGUISysCategory* userCategory=NULL;
+
+  for (FurnaceGUISysCategory& i: sysCategories) {
+    if (strcmp(i.name,"User")==0) {
+      userCategory=&i;
+      break;
+    }
+  }
+
+  if (userCategory==NULL) {
+    logE("could not find user category!");
+    return false;
+  }
+
+  if (redundancy) {
+    char oldPath[4096];
+    char newPath[4096];
+
+    if (fileExists(path.c_str())==1) {
+      logD("rotating preset files...");
+      for (int i=4; i>=0; i--) {
+        if (i>0) {
+          snprintf(oldPath,4095,"%s.%d",path.c_str(),i);
+        } else {
+          strncpy(oldPath,path.c_str(),4095);
+        }
+        snprintf(newPath,4095,"%s.%d",path.c_str(),i+1);
+
+        if (i>=4) {
+          logV("remove %s",oldPath);
+          deleteFile(oldPath);
+        } else {
+          logV("move %s to %s",oldPath,newPath);
+          moveFiles(oldPath,newPath);
+        }
+      }
+    }
+  }
+  logD("saving user presets: %s",path);
+  FILE* f=ps_fopen(path.c_str(),"wb");
+  if (f==NULL) {
+    logW("could not write presets! %s",strerror(errno));
+    return false;
+  }
+
+  writeSubEntries(f,userCategory->systems,0);
+
+  fclose(f);
+  logD("presets written successfully.");
   return true;
 }
+
+// user presets management
+void FurnaceGUI::drawUserPresets() {
+  if (nextWindow==GUI_WINDOW_USER_PRESETS) {
+    userPresetsOpen=true;
+    ImGui::SetNextWindowFocus();
+    nextWindow=GUI_WINDOW_NOTHING;
+  }
+  if (!userPresetsOpen) return;
+  if (ImGui::Begin("User Presets",&userPresetsOpen,globalWinFlags)) {
+    if (ImGui::BeginTable("UserPresets",2,ImGuiTableFlags_BordersInnerV)) {
+      ImGui::TableNextRow();
+      ImGui::TableNextColumn();
+      ImGui::Text("Presets...");
+      ImGui::TableNextColumn();
+      ImGui::Text("Edit...");
+
+      ImGui::EndTable();
+    }
+
+    if (ImGui::Button("Save and Close")) {
+      userPresetsOpen=false;
+    }
+  }
+  if (!userPresetsOpen) {
+    saveUserPresets(true);
+  }
+  if (ImGui::IsWindowFocused(ImGuiFocusedFlags_ChildWindows)) curWindow=GUI_WINDOW_USER_PRESETS;
+  ImGui::End();
+}
\ No newline at end of file