diff --git a/index.html b/index.html
index 636b9ea0..73aa692f 100644
--- a/index.html
+++ b/index.html
@@ -103,6 +103,94 @@
               >開発者ブログ・使い方など</a
             >
           </li>
+          <li class="nav-item">
+            <a
+              class="nav-link white"
+              href="https://www.kits-tools.net/other_npo.html"
+              >NPO一覧</a
+            >
+          </li>
+          <li class="nav-item dropdown">
+            <button
+              class="btn btn-theme-2 dropdown-toggle"
+              data-bs-toggle="dropdown"
+              aria-expanded="false"
+            >
+              ツール一覧
+            </button>
+            <ul class="dropdown-menu dropdown-menu-theme">
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/clock"
+                  >時計</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/apa"
+                  >APAスタイル</a
+                >
+              </li>
+              <li>
+                <a
+                  class="dropdown-item"
+                  href="https://www.kits-tools.net/vertical"
+                  >縦書きエディタ</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/todo"
+                  >todoリスト</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/group"
+                  >グループ分け</a
+                >
+              </li>
+              <li>
+                <a
+                  class="dropdown-item"
+                  href="https://www.kits-tools.net/number"
+                  >数字→読み方変換</a
+                >
+              </li>
+              <li>
+                <a
+                  class="dropdown-item"
+                  href="https://www.kits-tools.net/calculator"
+                  >電卓</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/timer"
+                  >タイマー</a
+                >
+              </li>
+              <li>
+                <a
+                  class="dropdown-item"
+                  href="https://www.kits-tools.net/pomodoro"
+                  >ポモドーロ時計</a
+                >
+              </li>
+              <li>
+                <a
+                  class="dropdown-item"
+                  href="https://www.kits-tools.net/stopwatch"
+                  >ストップウォッチ</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://memo.kits-tools.net"
+                  >メモ帳</a
+                >
+              </li>
+              <li>
+                <a class="dropdown-item" href="https://www.kits-tools.net/count"
+                  >カウンター</a
+                >
+              </li>
+            </ul>
+          </li>
         </ul>
       </div>
     </nav>