diff --git a/src/backend/src/routers/apps.js b/src/backend/src/routers/apps.js
index 1aa5896e..f99cfbd6 100644
--- a/src/backend/src/routers/apps.js
+++ b/src/backend/src/routers/apps.js
@@ -21,8 +21,8 @@ const express = require('express');
 const router = new express.Router();
 const auth = require('../middleware/auth.js');
 const config = require('../config');
-const { app_name_exists, refresh_apps_cache, chkperm, convert_path_to_fsentry, get_app } = require('../helpers');
-const { DB_WRITE, DB_READ } = require('../services/database/consts.js');
+const { get_app } = require('../helpers');
+const { DB_READ } = require('../services/database/consts.js');
 const subdomain = require('../middleware/subdomain.js');
 
 // -----------------------------------------------------------------------//
diff --git a/src/backend/src/routers/change_email.js b/src/backend/src/routers/change_email.js
index 18f240a8..2c0c1902 100644
--- a/src/backend/src/routers/change_email.js
+++ b/src/backend/src/routers/change_email.js
@@ -17,11 +17,9 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 "use strict"
-const validator = require('validator');
-const crypto = require('crypto');
 const eggspress = require('../api/eggspress.js');
 const APIError = require('../api/APIError.js');
-const { DB_READ, DB_WRITE } = require('../services/database/consts.js');
+const { DB_WRITE } = require('../services/database/consts.js');
 
 const config = require('../config.js');
 
diff --git a/src/backend/src/routers/confirm-email.js b/src/backend/src/routers/confirm-email.js
index d187b2cb..d8269e2b 100644
--- a/src/backend/src/routers/confirm-email.js
+++ b/src/backend/src/routers/confirm-email.js
@@ -18,7 +18,6 @@
  */
 "use strict"
 const express = require('express');
-const { invalidate_cached_user } = require('../helpers');
 const router = new express.Router();
 const auth = require('../middleware/auth.js');
 const { DB_WRITE } = require('../services/database/consts');
diff --git a/src/backend/src/routers/contactUs.js b/src/backend/src/routers/contactUs.js
index 6b8ae829..dd951df3 100644
--- a/src/backend/src/routers/contactUs.js
+++ b/src/backend/src/routers/contactUs.js
@@ -20,7 +20,6 @@
 const express = require('express');
 const router = express.Router();
 const auth = require('../middleware/auth.js');
-const config = require('../config');
 const { get_user, generate_random_str } = require('../helpers');
 const { DB_WRITE } = require('../services/database/consts.js');
 
diff --git a/src/backend/src/routers/open_item.js b/src/backend/src/routers/open_item.js
index ce7e2cb8..7bb8d1d4 100644
--- a/src/backend/src/routers/open_item.js
+++ b/src/backend/src/routers/open_item.js
@@ -17,10 +17,6 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 "use strict"
-const express = require('express');
-const router = new express.Router();
-const auth = require('../middleware/auth.js');
-const config = require('../config');
 const eggspress = require('../api/eggspress.js');
 const FSNodeParam = require('../api/filesystem/FSNodeParam.js');
 const { Context } = require('../util/context.js');
diff --git a/src/backend/src/routers/save_account.js b/src/backend/src/routers/save_account.js
index 5036ea5c..675794ad 100644
--- a/src/backend/src/routers/save_account.js
+++ b/src/backend/src/routers/save_account.js
@@ -22,9 +22,7 @@ const router = new express.Router();
 const {get_taskbar_items, username_exists, send_email_verification_code, send_email_verification_token, invalidate_cached_user, get_user } = require('../helpers');
 const auth = require('../middleware/auth.js');
 const config = require('../config');
-const { Context } = require('../util/context');
 const { DB_WRITE } = require('../services/database/consts');
-const { can } = require('../util/langutil.js');
 
 // -----------------------------------------------------------------------//
 // POST /save_account
diff --git a/src/backend/src/routers/sign.js b/src/backend/src/routers/sign.js
index 1813d098..7bb070d0 100644
--- a/src/backend/src/routers/sign.js
+++ b/src/backend/src/routers/sign.js
@@ -17,7 +17,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 "use strict"
-const {sign_file, convert_path_to_fsentry, uuid2fsentry, chkperm, get_app}  = require('../helpers');
+const {sign_file, get_app}  = require('../helpers');
 const eggspress = require('../api/eggspress.js');
 const APIError = require('../api/APIError.js');
 const { Context } = require('../util/context.js');
diff --git a/src/backend/src/routers/signup.js b/src/backend/src/routers/signup.js
index f061d66d..4957abbb 100644
--- a/src/backend/src/routers/signup.js
+++ b/src/backend/src/routers/signup.js
@@ -19,7 +19,7 @@
 "use strict"
 const express = require('express');
 const router = new express.Router();
-const {get_taskbar_items, generate_random_username, generate_system_fsentries, body_parser_error_handler, send_email_verification_code, send_email_verification_token, username_exists, invalidate_cached_user_by_id, get_user } = require('../helpers');
+const {get_taskbar_items, generate_random_username, generate_system_fsentries, send_email_verification_code, send_email_verification_token, username_exists, invalidate_cached_user_by_id, get_user } = require('../helpers');
 const config = require('../config');
 const eggspress = require('../api/eggspress');
 const { Context } = require('../util/context');
diff --git a/src/backend/src/routers/suggest_apps.js b/src/backend/src/routers/suggest_apps.js
index cc1b70d0..53c645f6 100644
--- a/src/backend/src/routers/suggest_apps.js
+++ b/src/backend/src/routers/suggest_apps.js
@@ -42,7 +42,7 @@ router.post('/suggest_apps', auth, express.json(), async (req, res, next)=>{
         return res.status(400).send({message: '`uid` or `path` required'})
 
     // modules
-    const {convert_path_to_fsentry, uuid2fsentry, chkperm, suggest_app_for_fsentry}  = require('../helpers')
+    const {convert_path_to_fsentry, uuid2fsentry, suggest_app_for_fsentry}  = require('../helpers')
     let fsentry;
 
     // by uid
diff --git a/src/backend/src/routers/verify-pass-recovery-token.js b/src/backend/src/routers/verify-pass-recovery-token.js
index be5caa63..558da651 100644
--- a/src/backend/src/routers/verify-pass-recovery-token.js
+++ b/src/backend/src/routers/verify-pass-recovery-token.js
@@ -20,8 +20,7 @@
 const express = require('express')
 const router = new express.Router()
 const config = require('../config')
-const { invalidate_cached_user_by_id, get_user } = require('../helpers')
-const { DB_WRITE } = require('../services/database/consts')
+const { get_user } = require('../helpers')
 
 const jwt = require('jsonwebtoken');
 
diff --git a/src/backend/src/routers/writeFile.js b/src/backend/src/routers/writeFile.js
index 8d7accfc..7e42ec6f 100644
--- a/src/backend/src/routers/writeFile.js
+++ b/src/backend/src/routers/writeFile.js
@@ -20,7 +20,6 @@
 const express = require('express');
 const router = new express.Router();
 const {uuid2fsentry, validate_signature_auth, get_url_from_req, sign_file} = require('../helpers');
-const multer = require('multer');
 const fs = require('../middleware/fs.js');
 const { NodePathSelector, NodeUIDSelector } = require('../filesystem/node/selectors');
 const eggspress = require('../api/eggspress');
diff --git a/src/gui/src/UI/UIWindowTaskManager.js b/src/gui/src/UI/UIWindowTaskManager.js
index 5ff1e3ff..3716030c 100644
--- a/src/gui/src/UI/UIWindowTaskManager.js
+++ b/src/gui/src/UI/UIWindowTaskManager.js
@@ -19,7 +19,6 @@
 import { END_HARD, END_SOFT } from "../definitions.js";
 import UIAlert from "./UIAlert.js";
 import UIContextMenu from "./UIContextMenu.js";
-import UIWindow from "./UIWindow.js";
 import { Component, defineComponent } from '../util/Component.js';
 import UIComponentWindow from './UIComponentWindow.js';
 import Table from './Components/Table.js';