diff --git a/aw_watcher_window/macos.swift b/aw_watcher_window/macos.swift
index 961a846..9eb97df 100644
--- a/aw_watcher_window/macos.swift
+++ b/aw_watcher_window/macos.swift
@@ -138,9 +138,12 @@ let researchBrowserApps = Set([
   "google-chrome-unstable",
   "chromium",
   "chromium-browser",
+  "chromium.exe",
   "brave browser",
   "brave",
   "brave-browser",
+  "arc",
+  "arc browser",
   "firefox",
   "firefox developer edition",
   "firefox-esr",
@@ -151,6 +154,8 @@ let researchBrowserApps = Set([
   "microsoft-edge-beta",
   "microsoft-edge-dev",
   "opera",
+  "vivaldi",
+  "vivaldi.exe",
   "chrome.exe",
   "brave.exe",
   "firefox.exe",
diff --git a/aw_watcher_window/research_filter.py b/aw_watcher_window/research_filter.py
index e3c7189..756ffe8 100644
--- a/aw_watcher_window/research_filter.py
+++ b/aw_watcher_window/research_filter.py
@@ -33,9 +33,12 @@
         "google-chrome-unstable",
         "chromium",
         "chromium-browser",
+        "chromium.exe",
         "brave browser",
         "brave",
         "brave-browser",
+        "arc",
+        "arc browser",
         "firefox",
         "firefox developer edition",
         "firefox-esr",
@@ -46,6 +49,8 @@
         "microsoft-edge-beta",
         "microsoft-edge-dev",
         "opera",
+        "vivaldi",
+        "vivaldi.exe",
         "chrome.exe",
         "brave.exe",
         "firefox.exe",
diff --git a/tests/test_research_filter.py b/tests/test_research_filter.py
index 41c50ac..c6b7fa7 100644
--- a/tests/test_research_filter.py
+++ b/tests/test_research_filter.py
@@ -1,6 +1,8 @@
 """Tests for aw-watcher-window Research Edition filter."""
 
+import re
 import unittest
+from pathlib import Path
 
 from aw_watcher_window.research_filter import (
     BROWSER_APPS,
@@ -41,6 +43,17 @@ def test_non_browsers(self):
         for app in ("Slack", "Terminal", "iTerm2", "Code", "zoom.us", ""):
             self.assertFalse(is_browser(app), f"{app!r} should not be a browser")
 
+    def test_python_and_swift_browser_aliases_match(self):
+        swift = (Path(__file__).parents[1] / "aw_watcher_window" / "macos.swift").read_text()
+        match = re.search(
+            r"let\s+researchBrowserApps\s*=\s*Set\s*\(\s*\[(?P<entries>.*?)\]\s*\)",
+            swift,
+            re.DOTALL,
+        )
+        self.assertIsNotNone(match)
+        swift_browser_apps = set(re.findall(r'"([^"]+)"', match.group("entries")))
+        self.assertEqual(swift_browser_apps, BROWSER_APPS)
+
 
 class TestClassifyTitle(unittest.TestCase):
     CATEGORY_MAP = {
@@ -191,6 +204,17 @@ def test_linux_browser_wm_class_title_classified(self):
                 self.assertEqual(result["app"], app)
                 self.assertEqual(result["title"], "Youtube")
 
+    def test_original_classifier_browser_aliases_are_classified(self):
+        for app in ("Arc", "Arc Browser", "Vivaldi", "Vivaldi.exe", "Chromium.exe"):
+            with self.subTest(app=app):
+                window = {
+                    "app": app,
+                    "title": "New Tab",
+                    "url": "https://youtube.com/watch?v=private",
+                }
+                result = transform(window, self.CATEGORY_MAP)
+                self.assertEqual(result, {"app": app, "title": "Youtube"})
+
     def test_input_not_mutated(self):
         window = {"app": "Chrome", "title": "YouTube - Chrome"}
         original = dict(window)