diff --git a/build/MacIcon-dev.icns b/build/MacIcon-dev.icns
new file mode 100644
index 0000000..6d8cd9a
Binary files /dev/null and b/build/MacIcon-dev.icns differ
diff --git a/build/MacIcon-dev.iconset/icon_1024x1024.png b/build/MacIcon-dev.iconset/icon_1024x1024.png
new file mode 100644
index 0000000..c8e9bd9
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diff --git a/build/MacIcon-dev.iconset/icon_128x128.png b/build/MacIcon-dev.iconset/icon_128x128.png
new file mode 100644
index 0000000..e411f02
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diff --git a/build/MacIcon-dev.iconset/icon_16x16.png b/build/MacIcon-dev.iconset/icon_16x16.png
new file mode 100644
index 0000000..626d5df
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diff --git a/build/MacIcon-dev.iconset/icon_256x256.png b/build/MacIcon-dev.iconset/icon_256x256.png
new file mode 100644
index 0000000..fc8492d
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diff --git a/build/MacIcon-dev.iconset/icon_32x32.png b/build/MacIcon-dev.iconset/icon_32x32.png
new file mode 100644
index 0000000..2b009ea
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diff --git a/build/MacIcon-dev.iconset/icon_512x512.png b/build/MacIcon-dev.iconset/icon_512x512.png
new file mode 100644
index 0000000..eb0280d
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diff --git a/build/MacIcon-dev.iconset/icon_64x64.png b/build/MacIcon-dev.iconset/icon_64x64.png
new file mode 100644
index 0000000..712dc48
Binary files /dev/null and b/build/MacIcon-dev.iconset/icon_64x64.png differ
diff --git a/build/Macicon.icns b/build/Macicon.icns
new file mode 100644
index 0000000..1af38ae
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diff --git a/build/Macicon.iconset/icon_1024x1024.png b/build/Macicon.iconset/icon_1024x1024.png
new file mode 100644
index 0000000..57fc6f6
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diff --git a/build/Macicon.iconset/icon_128x128.png b/build/Macicon.iconset/icon_128x128.png
new file mode 100644
index 0000000..08eac63
Binary files /dev/null and b/build/Macicon.iconset/icon_128x128.png differ
diff --git a/build/Macicon.iconset/icon_16x16.png b/build/Macicon.iconset/icon_16x16.png
new file mode 100644
index 0000000..4ad3d79
Binary files /dev/null and b/build/Macicon.iconset/icon_16x16.png differ
diff --git a/build/Macicon.iconset/icon_256x256.png b/build/Macicon.iconset/icon_256x256.png
new file mode 100644
index 0000000..691eed0
Binary files /dev/null and b/build/Macicon.iconset/icon_256x256.png differ
diff --git a/build/Macicon.iconset/icon_32x32.png b/build/Macicon.iconset/icon_32x32.png
new file mode 100644
index 0000000..18040d5
Binary files /dev/null and b/build/Macicon.iconset/icon_32x32.png differ
diff --git a/build/Macicon.iconset/icon_512x512.png b/build/Macicon.iconset/icon_512x512.png
new file mode 100644
index 0000000..8b09856
Binary files /dev/null and b/build/Macicon.iconset/icon_512x512.png differ
diff --git a/build/Macicon.iconset/icon_64x64.png b/build/Macicon.iconset/icon_64x64.png
new file mode 100644
index 0000000..a69f663
Binary files /dev/null and b/build/Macicon.iconset/icon_64x64.png differ
diff --git a/index.html b/index.html
index 08cfdd6..ace74f9 100644
--- a/index.html
+++ b/index.html
@@ -9,18 +9,57 @@
     body {
       font-family: Arial, sans-serif;
       text-align: center;
-      padding: 50px;
+      padding: 20px;
     }
 
-    #selected-directory {
+    #selected-directories {
       margin-top: 20px;
+      text-align: left;
+      max-width: 500px;
+      margin-left: auto;
+      margin-right: auto;
+    }
+
+    .directory-item {
+      display: flex;
+      justify-content: space-between;
+      align-items: center;
+      padding: 8px;
+      border-bottom: 1px solid #ccc;
+    }
+
+    .directory-path {
       word-break: break-all;
     }
 
+    .remove-button {
+      background-color: #ff4d4d;
+      border: none;
+      color: white;
+      padding: 5px 10px;
+      border-radius: 3px;
+      cursor: pointer;
+    }
+
+    #log {
+      margin-top: 20px;
+      text-align: left;
+      white-space: pre-wrap;
+      background-color: #f0f0f0;
+      padding: 10px;
+      border-radius: 5px;
+      height: 200px;
+      overflow-y: scroll;
+      max-width: 500px;
+      margin-left: auto;
+      margin-right: auto;
+    }
+
     button {
       padding: 10px 20px;
       font-size: 16px;
       cursor: pointer;
+      margin-bottom: 10px;
     }
   </style>
 </head>
@@ -28,20 +67,74 @@
 <body>
   <h1>디렉토리 감시 애플리케이션</h1>
   <button id="select-directory">디렉토리 선택</button>
-  <div id="selected-directory">선택된 디렉토리 없음</div>
+  <div id="selected-directories">
+    <h2>감시 중인 디렉토리</h2>
+    <div id="directories-list">
+      <!-- 선택된 디렉토리 목록이 여기에 표시됩니다 -->
+    </div>
+  </div>
+  <div id="log">
+    로그가 여기에 표시됩니다.
+  </div>
 
   <script>
     const selectDirButton = document.getElementById('select-directory');
-    const selectedDirDiv = document.getElementById('selected-directory');
+    const directoriesList = document.getElementById('directories-list');
+    const logDiv = document.getElementById('log');
 
+    // 디렉토리 선택 버튼 클릭 시
     selectDirButton.addEventListener('click', async () => {
-      const result = await window.electronAPI.selectDirectory();
+      const result = await window.electronAPI.selectDirectories();
       if (!result.canceled) {
-        selectedDirDiv.textContent = `선택된 디렉토리: ${ result.path }`;
-      } else {
-        selectedDirDiv.textContent = '디렉토리 선택이 취소되었습니다.';
+        for (const path of result.paths) {
+          addDirectoryToList(path);
+        }
       }
     });
+
+    // 디렉토리를 목록에 추가하는 함수
+    function addDirectoryToList(dirPath) {
+      // 이미 목록에 있는 경우 중복 추가 방지
+      if (document.querySelector(`[data-path="${ dirPath }"]`)) {
+        return;
+      }
+
+      const directoryItem = document.createElement('div');
+      directoryItem.className = 'directory-item';
+      directoryItem.setAttribute('data-path', dirPath);
+
+      const pathSpan = document.createElement('span');
+      pathSpan.className = 'directory-path';
+      pathSpan.textContent = dirPath;
+
+      const removeBtn = document.createElement('button');
+      removeBtn.className = 'remove-button';
+      removeBtn.textContent = '제거';
+      removeBtn.addEventListener('click', async () => {
+        const response = await window.electronAPI.removeDirectory(dirPath);
+        if (response.success) {
+          directoriesList.removeChild(directoryItem);
+          appendLog(`디렉토리 감시 중지: "${ dirPath }"`);
+        } else {
+          appendLog(`디렉토리 제거 실패: "${ response.message }"`);
+        }
+      });
+
+      directoryItem.appendChild(pathSpan);
+      directoryItem.appendChild(removeBtn);
+      directoriesList.appendChild(directoryItem);
+    }
+
+    // 로그 메시지를 로그 섹션에 추가하는 함수
+    function appendLog(message) {
+      logDiv.textContent += `${ message }\n`;
+      logDiv.scrollTop = logDiv.scrollHeight; // 자동 스크롤
+    }
+
+    // 로그 메시지 수신 시
+    window.electronAPI.onLog((message) => {
+      appendLog(message);
+    });
   </script>
 </body>
 
diff --git a/main.js b/main.js
index 7776c4c..b3d91c4 100644
--- a/main.js
+++ b/main.js
@@ -1,15 +1,40 @@
 // main.js
-const { app, BrowserWindow, dialog, ipcMain } = require("electron");
+const {
+  app,
+  BrowserWindow,
+  dialog,
+  ipcMain,
+  Notification,
+  Tray,
+  Menu,
+} = require("electron");
 const path = require("path");
 const chokidar = require("chokidar");
 const fs = require("fs").promises;
 
+let tray = null;
+let mainWindow = null;
+
+// 로그 파일 경로 지정
+const logFilePath = path.join(app.getPath("userData"), "watcher.log");
+
+// 로그 기록 함수
+async function log(message) {
+  const timestamp = new Date().toISOString();
+  const logMessage = `[${timestamp}] ${message}\n`;
+  await fs.appendFile(logFilePath, logMessage);
+}
+
 // 무시할 파일/디렉토리를 결정하는 함수
 function shouldIgnore(itemName) {
   const ignoredItems = [".git", "node_modules", ".env"];
   return ignoredItems.includes(itemName);
 }
 
+// 현재 감시 중인 디렉토리 목록
+let watchedDirectories = [];
+let watchers = {};
+
 // 파일 이름을 정규화하는 함수
 async function normalizeFileName(filePath) {
   const dir = path.dirname(filePath);
@@ -20,19 +45,49 @@ async function normalizeFileName(filePath) {
     const newPath = path.join(dir, newName);
     try {
       await fs.rename(filePath, newPath);
-      console.log(`이름 변경: "${oldName}" -> "${newName}"`);
+      await log(`이름 변경: "${oldName}" -> "${newName}"`);
+
+      // 알림 생성
+      new Notification({
+        title: "이름 변경 완료",
+        body: `"${oldName}"이 "${newName}"으로 변경되었습니다.`,
+      }).show();
+
+      // 렌더러 프로세스로 알림 전송
+      if (mainWindow) {
+        mainWindow.webContents.send(
+          "log-message",
+          `이름 변경: "${oldName}" -> "${newName}"`
+        );
+      }
+
       return newPath;
     } catch (error) {
-      console.error(`이름 변경 실패 ("${oldName}"):`, error);
+      await log(`이름 변경 실패 ("${oldName}"): ${error}`);
+      if (mainWindow) {
+        mainWindow.webContents.send(
+          "log-message",
+          `이름 변경 실패 ("${oldName}"): ${error}`
+        );
+      }
       return filePath;
     }
   }
+
   return filePath;
 }
 
 // 디렉토리를 재귀적으로 처리하는 함수
 async function processDirectory(dirPath) {
   try {
+    await log(`디렉토리 처리 시작: "${dirPath}"`);
+    if (mainWindow) {
+      mainWindow.webContents.send(
+        "log-message",
+        `디렉토리 처리 시작: "${dirPath}"`
+      );
+    }
+
     const entries = await fs.readdir(dirPath, { withFileTypes: true });
 
     for (const entry of entries) {
@@ -47,16 +102,29 @@ async function processDirectory(dirPath) {
       }
     }
     await normalizeFileName(dirPath);
+    await log(`디렉토리 처리 완료: "${dirPath}"`);
+    if (mainWindow) {
+      mainWindow.webContents.send(
+        "log-message",
+        `디렉토리 처리 완료: "${dirPath}"`
+      );
+    }
   } catch (error) {
-    console.error(`디렉토리 처리 중 오류 발생 ("${dirPath}"):`, error);
+    await log(`디렉토리 처리 중 오류 발생 ("${dirPath}"): ${error}`);
+    if (mainWindow) {
+      mainWindow.webContents.send(
+        "log-message",
+        `디렉토리 처리 중 오류 발생 ("${dirPath}"): ${error}`
+      );
+    }
   }
 }
 
 // 창을 생성하는 함수
 function createWindow() {
-  const win = new BrowserWindow({
+  mainWindow = new BrowserWindow({
     width: 600,
-    height: 400,
+    height: 500,
     webPreferences: {
       preload: path.join(__dirname, "preload.js"), // 보안상 추천
       nodeIntegration: false,
@@ -64,15 +132,56 @@ function createWindow() {
     },
   });
 
-  win.loadFile("index.html");
+  mainWindow.loadFile("index.html");
 
   // 개발자 도구 열기 (배포 시 제거 권장)
-  // win.webContents.openDevTools();
+  // mainWindow.webContents.openDevTools();
+
+  mainWindow.on("closed", function () {
+    mainWindow = null;
+  });
 }
 
-// 애플리케이션 준비 시 창 생성
+// 트레이 메뉴 설정
+function setTray() {
+  tray = new Tray(path.join(__dirname, "icon.png")); // 메뉴 바 아이콘 경로 (.png 또는 .icns)
+
+  const contextMenu = Menu.buildFromTemplate([
+    {
+      label: "열기",
+      click: () => {
+        if (mainWindow === null) {
+          createWindow();
+        } else {
+          mainWindow.show();
+        }
+      },
+    },
+    {
+      label: "종료",
+      click: () => {
+        app.quit();
+      },
+    },
+  ]);
+
+  tray.setToolTip("Directory Watcher App");
+  tray.setContextMenu(contextMenu);
+
+  // 더블 클릭 시 창 열기
+  tray.on("double-click", () => {
+    if (mainWindow === null) {
+      createWindow();
+    } else {
+      mainWindow.show();
+    }
+  });
+}
+
+// 애플리케이션 준비 시 창 및 트레이 설정
 app.whenReady().then(() => {
   createWindow();
+  setTray();
 
   app.on("activate", function () {
     if (BrowserWindow.getAllWindows().length === 0) createWindow();
@@ -85,64 +194,138 @@ app.on("window-all-closed", function () {
 });
 
 // 디렉토리 감시 로직 처리
-ipcMain.handle("select-directory", async () => {
+ipcMain.handle("select-directories", async () => {
   const result = await dialog.showOpenDialog({
-    properties: ["openDirectory"],
+    properties: ["openDirectory", "multiSelections"],
   });
 
   if (result.canceled) {
     return { canceled: true };
   } else {
-    const selectedPath = result.filePaths[0];
-    console.log(`선택된 디렉토리: ${selectedPath}`);
-
-    // 기존 감시자 종료 (필요 시)
-    if (global.watcher) {
-      global.watcher.close();
+    const selectedPaths = result.filePaths;
+    console.log(`선택된 디렉토리: ${selectedPaths.join(", ")}`);
+    await log(`선택된 디렉토리: "${selectedPaths.join('", "')}"`);
+    if (mainWindow) {
+      mainWindow.webContents.send(
+        "log-message",
+        `선택된 디렉토리: "${selectedPaths.join('", "')}"`
+      );
     }
 
-    // 디렉토리 초기 처리
-    await processDirectory(selectedPath);
+    for (const selectedPath of selectedPaths) {
+      if (!watchedDirectories.includes(selectedPath)) {
+        watchedDirectories.push(selectedPath);
+        await processDirectory(selectedPath);
 
-    // 디렉토리 감시 시작
-    global.watcher = chokidar.watch(selectedPath, {
-      ignored: (pathStr) => {
-        const baseName = path.basename(pathStr);
-        return shouldIgnore(baseName);
-      },
-      persistent: true,
-      ignoreInitial: false,
-      awaitWriteFinish: {
-        stabilityThreshold: 200,
-        pollInterval: 100,
-      },
-      depth: Infinity,
-    });
+        // chokidar watcher 설정
+        const watcher = chokidar.watch(selectedPath, {
+          ignored: (pathStr) => {
+            const baseName = path.basename(pathStr);
+            return shouldIgnore(baseName);
+          },
+          persistent: true,
+          ignoreInitial: false,
+          awaitWriteFinish: {
+            stabilityThreshold: 200,
+            pollInterval: 100,
+          },
+          depth: Infinity,
+        });
 
-    global.watcher
-      .on("add", async (filePath) => {
-        console.log(`파일 추가됨: "${filePath}"`);
-        await normalizeFileName(filePath);
-      })
-      .on("change", async (filePath) => {
-        console.log(`파일 변경됨: "${filePath}"`);
-        await normalizeFileName(filePath);
-      })
-      .on("unlink", (filePath) => {
-        console.log(`파일 삭제됨: "${filePath}"`);
-      })
-      .on("addDir", async (dirPath) => {
-        console.log(`디렉토리 추가됨: "${dirPath}"`);
-        await processDirectory(dirPath);
-      })
-      .on("unlinkDir", (dirPath) => {
-        console.log(`디렉토리 삭제됨: "${dirPath}"`);
-      })
-      .on("error", (error) => console.error(`Watcher error: ${error}`))
-      .on("ready", () => {
-        console.log("초기 스캔 완료. 변경 감시 중...");
-      });
+        watchers[selectedPath] = watcher;
 
-    return { canceled: false, path: selectedPath };
+        watcher
+          .on("add", async (filePath) => {
+            await log(`파일 추가됨: "${filePath}"`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `파일 추가됨: "${filePath}"`
+              );
+            }
+            await normalizeFileName(filePath);
+          })
+          .on("change", async (filePath) => {
+            await log(`파일 변경됨: "${filePath}"`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `파일 변경됨: "${filePath}"`
+              );
+            }
+            await normalizeFileName(filePath);
+          })
+          .on("unlink", async (filePath) => {
+            await log(`파일 삭제됨: "${filePath}"`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `파일 삭제됨: "${filePath}"`
+              );
+            }
+          })
+          .on("addDir", async (dirPath) => {
+            await log(`디렉토리 추가됨: "${dirPath}"`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `디렉토리 추가됨: "${dirPath}"`
+              );
+            }
+            await processDirectory(dirPath);
+          })
+          .on("unlinkDir", async (dirPath) => {
+            await log(`디렉토리 삭제됨: "${dirPath}"`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `디렉토리 삭제됨: "${dirPath}"`
+              );
+            }
+          })
+          .on("error", async (error) => {
+            await log(`Watcher error: ${error}`);
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                `Watcher error: ${error}`
+              );
+            }
+          })
+          .on("ready", () => {
+            log("초기 스캔 완료. 변경 감시 중...");
+            if (mainWindow) {
+              mainWindow.webContents.send(
+                "log-message",
+                "초기 스캔 완료. 변경 감시 중..."
+              );
+            }
+          });
+      }
+    }
+
+    // 반환값으로 선택된 경로들을 전달
+    return { canceled: false, paths: selectedPaths };
+  }
+});
+
+// 디렉토리 제거 핸들러
+ipcMain.handle("remove-directory", async (event, dirPath) => {
+  if (watchedDirectories.includes(dirPath)) {
+    watchedDirectories = watchedDirectories.filter((path) => path !== dirPath);
+    if (watchers[dirPath]) {
+      await watchers[dirPath].close();
+      delete watchers[dirPath];
+      await log(`디렉토리 감시 중지: "${dirPath}"`);
+      if (mainWindow) {
+        mainWindow.webContents.send(
+          "log-message",
+          `디렉토리 감시 중지: "${dirPath}"`
+        );
+      }
+    }
+    return { success: true };
+  } else {
+    return { success: false, message: "디렉토리가 감시 목록에 없습니다." };
   }
 });
diff --git a/package.json b/package.json
index fafb0a0..b8818d7 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,8 @@
   },
   "scripts": {
     "start": "electron .",
-    "package": "electron-packager . NFD2NF --platform=darwin --arch=x64 --icon=build/icons/MacIcon.icns --overwrite --prune=true --out=dist",
+    "package": "electron-packager . NFD2NF --platform=darwin --arch=arm64,x64 --icon=build/icons/MacIcon.icns --overwrite --prune=true --out=dist",
+    "package dev": "electron-packager . NFD2NF --platform=darwin --arch=arm64,x64 --icon=build/icons/MacIcon-dev.icns --overwrite --prune=true --out=dist --asar --app-bundle-id=com.pieroot.nfd2nfc",
     "pkg": "pkg normalize.js --target node16-macos-x64,node16-linux-x64,node16-win-x64 --output ./dist/NFD2NFC"
   },
   "directories": {
diff --git a/preload.js b/preload.js
index b7b251d..7d1260d 100644
--- a/preload.js
+++ b/preload.js
@@ -2,5 +2,8 @@
 const { contextBridge, ipcRenderer } = require("electron");
 
 contextBridge.exposeInMainWorld("electronAPI", {
-  selectDirectory: () => ipcRenderer.invoke("select-directory"),
+  selectDirectories: () => ipcRenderer.invoke("select-directories"),
+  removeDirectory: (dirPath) => ipcRenderer.invoke("remove-directory", dirPath),
+  onLog: (callback) =>
+    ipcRenderer.on("log-message", (event, message) => callback(message)),
 });