diff --git a/Lib/idlelib/News3.txt b/Lib/idlelib/News3.txt
index 37ff93f9866e3c..b33b7aeb2be7ef 100644
--- a/Lib/idlelib/News3.txt
+++ b/Lib/idlelib/News3.txt
@@ -4,6 +4,8 @@ Released on 2024-10-xx
 =========================
 
 
+gh-112695: Rename stackviewer module to stackbrowser.
+
 gh-120083: Add explicit black IDLE Hovertip foreground color needed for
 recent macOS. Fixes Sonoma showing unreadable white on pale yellow.
 Patch by John Riggles.
@@ -194,8 +196,9 @@ bpo-40181: In calltips, stop reminding that '/' marks the end of
 positional-only arguments.
 
 
-What's New in IDLE 3.9.0 (since 3.8.0)
-Released on 2020-10-05?
+What's New in IDLE 3.9.0
+(since 3.8.0)
+Released on 2020-10-05
 ======================================
 
 bpo-41468: Improve IDLE run crash error message (which users should
diff --git a/Lib/idlelib/README.txt b/Lib/idlelib/README.txt
index 76aec58912f00e..e3d0404b249dcf 100644
--- a/Lib/idlelib/README.txt
+++ b/Lib/idlelib/README.txt
@@ -77,9 +77,8 @@ searchbase.py     # Define base for search, replace, and grep dialogs.
 searchengine.py   # Define engine for all 3 search dialogs.
 sidebar.py        # Define line number and shell prompt sidebars.
 squeezer.py       # Squeeze long shell output (nim).
-stackviewer.py    # View stack after exception.
+stackbrowser.py    # View stack after exception.
 statusbar.py      # Define status bar for windows (nim).
-tabbedpages.py    # Define tabbed pages widget (nim).
 textview.py       # Define read-only text widget (nim).
 tooltip.py        # Define popups for calltips, squeezer (nim).
 tree.py           # Define tree widget, used in browsers (nim).
@@ -100,8 +99,8 @@ Text
 ----
 CREDITS.txt  # not maintained, displayed by About IDLE
 HISTORY.txt  # NEWS up to July 2001
-NEWS.txt     # commits, displayed by About IDLE
-NEWS2.txt    # commits to Python2
+NEWS3.txt     # commits, displayed by About IDLE
+NEWS2x.txt    # commits to Python2
 README.txt   # this file, displayed by About IDLE
 TODO.txt     # needs review
 extend.txt   # about writing extensions
diff --git a/Lib/idlelib/idle_test/htest.py b/Lib/idlelib/idle_test/htest.py
index a7293774eecaeb..d373d673da9006 100644
--- a/Lib/idlelib/idle_test/htest.py
+++ b/Lib/idlelib/idle_test/htest.py
@@ -320,7 +320,7 @@
     }
 
 _stackbrowser_spec = {
-    'file': 'stackviewer',
+    'file': 'stackbrowser',
     'kwds': {},
     'msg': "A stacktrace for a NameError exception.\n"
            "Should have NameError and 1 traceback line."
diff --git a/Lib/idlelib/idle_test/test_debugger.py b/Lib/idlelib/idle_test/test_debugger.py
index d1c9638dd5d711..baa132e4e4bf29 100644
--- a/Lib/idlelib/idle_test/test_debugger.py
+++ b/Lib/idlelib/idle_test/test_debugger.py
@@ -241,7 +241,7 @@ def tearDownClass(cls):
         del cls.root
 
     def setUp(self):
-        self.code = compile(TEST_CODE, 'test_stackviewer.py', 'exec')
+        self.code = compile(TEST_CODE, 'test_stackbrowser.py', 'exec')
         self.stack = [
             (MockFrame(self.code, 1), 1),
             (MockFrame(self.code, 2), 2)
@@ -272,8 +272,8 @@ def test_show_source(self):
         # Patch out isfile to pretend file exists.
         with patch('idlelib.debugger.os.path.isfile', return_value=True) as isfile:
             self.sv.show_source(1)
-            isfile.assert_called_once_with('test_stackviewer.py')
-            self.sv.flist.open.assert_called_once_with('test_stackviewer.py')
+            isfile.assert_called_once_with('test_stackbrowser.py')
+            self.sv.flist.open.assert_called_once_with('test_stackbrowser.py')
 
 
 class NameSpaceTest(unittest.TestCase):
diff --git a/Lib/idlelib/idle_test/test_stackviewer.py b/Lib/idlelib/idle_test/test_stackbrowser.py
similarity index 72%
rename from Lib/idlelib/idle_test/test_stackviewer.py
rename to Lib/idlelib/idle_test/test_stackbrowser.py
index 55f510382bf4c3..b59d6f0f34a8c6 100644
--- a/Lib/idlelib/idle_test/test_stackviewer.py
+++ b/Lib/idlelib/idle_test/test_stackbrowser.py
@@ -1,6 +1,6 @@
-"Test stackviewer, coverage 63%."
+"Test stackbrowser, coverage 63%."
 
-from idlelib import stackviewer
+from idlelib import stackbrowser
 import unittest
 from test.support import requires
 from tkinter import Tk
@@ -30,11 +30,11 @@ def test_init(self):
         try:
             abc
         except NameError as exc:
-            sb = stackviewer.StackBrowser(self.root, exc)
+            sb = stackbrowser.StackBrowser(self.root, exc)
         isi = self.assertIsInstance
-        isi(stackviewer.sc, ScrolledCanvas)
-        isi(stackviewer.item, stackviewer.StackTreeItem)
-        isi(stackviewer.node, TreeNode)
+        isi(stackbrowser.sc, ScrolledCanvas)
+        isi(stackbrowser.item, stackbrowser.StackTreeItem)
+        isi(stackbrowser.node, TreeNode)
 
 
 if __name__ == '__main__':
diff --git a/Lib/idlelib/pyshell.py b/Lib/idlelib/pyshell.py
index e882c6cb3b8d19..4d1cec7872c7c9 100755
--- a/Lib/idlelib/pyshell.py
+++ b/Lib/idlelib/pyshell.py
@@ -1362,7 +1362,7 @@ def open_stack_viewer(self, event=None):  # -n mode only
         if self.interp.rpcclt:
             return self.interp.remote_stack_viewer()
 
-        from idlelib.stackviewer import StackBrowser
+        from idlelib.stackbrowser import StackBrowser
         try:
             StackBrowser(self.root, sys.last_exc, self.flist)
         except:
diff --git a/Lib/idlelib/run.py b/Lib/idlelib/run.py
index 8f98e73258e778..50cce68dd5b263 100644
--- a/Lib/idlelib/run.py
+++ b/Lib/idlelib/run.py
@@ -24,7 +24,7 @@
 from idlelib import debugobj_r  # remote_object_tree_item
 from idlelib import iomenu  # encoding
 from idlelib import rpc  # multiple objects
-from idlelib import stackviewer  # StackTreeItem
+from idlelib import stackbrowser  # StackTreeItem
 import __main__
 
 import tkinter  # Use tcl and, if startup fails, messagebox.
@@ -642,7 +642,7 @@ def stackviewer(self, flist_oid=None):
         while tb and tb.tb_frame.f_globals["__name__"] in ["rpc", "run"]:
             tb = tb.tb_next
         exc.__traceback__ = tb
-        item = stackviewer.StackTreeItem(exc, flist)
+        item = stackbrowser.StackTreeItem(exc, flist)
         return debugobj_r.remote_object_tree_item(item)
 
 
diff --git a/Lib/idlelib/stackviewer.py b/Lib/idlelib/stackbrowser.py
similarity index 90%
rename from Lib/idlelib/stackviewer.py
rename to Lib/idlelib/stackbrowser.py
index 95042d4debdc03..4c0cdb9a5144f3 100644
--- a/Lib/idlelib/stackviewer.py
+++ b/Lib/idlelib/stackbrowser.py
@@ -1,5 +1,3 @@
-# Rename to stackbrowser or possibly consolidate with browser.
-
 import linecache
 import os
 
@@ -64,10 +62,9 @@ def GetText(self):
         sourceline = linecache.getline(filename, lineno)
         sourceline = sourceline.strip()
         if funcname in ("?", "", None):
-            item = "%s, line %d: %s" % (modname, lineno, sourceline)
+            item = f"{modname}, line {lineno}: {sourceline}"
         else:
-            item = "%s.%s(...), line %d: %s" % (modname, funcname,
-                                             lineno, sourceline)
+            item = f"{modname}.{funcname}(...), line {lineno}: {sourceline}"
         return item
 
     def GetSubList(self):
@@ -116,7 +113,7 @@ def setfunction(value, key=key, object_=self.object):
 def _stackbrowser(parent):  # htest #
     from idlelib.pyshell import PyShellFileList
     top = tk.Toplevel(parent)
-    top.title("Test StackViewer")
+    top.title("Test StackBrowser")
     x, y = map(int, parent.geometry().split('+')[1:])
     top.geometry("+%d+%d" % (x + 50, y + 175))
     flist = PyShellFileList(top)
@@ -128,7 +125,7 @@ def _stackbrowser(parent):  # htest #
 
 if __name__ == '__main__':
     from unittest import main
-    main('idlelib.idle_test.test_stackviewer', verbosity=2, exit=False)
+    main('idlelib.idle_test.test_stackbrowser', verbosity=2, exit=False)
 
     from idlelib.idle_test.htest import run
     run(_stackbrowser)
diff --git a/Misc/NEWS.d/next/Library/2024-07-05-21-25-12.gh-issue-112695.8rT7M4.rst b/Misc/NEWS.d/next/Library/2024-07-05-21-25-12.gh-issue-112695.8rT7M4.rst
new file mode 100644
index 00000000000000..ab126bf91306f5
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2024-07-05-21-25-12.gh-issue-112695.8rT7M4.rst
@@ -0,0 +1 @@
+Rename IDLE stackviewer module to stackbrowser.