diff --git a/NEWS b/NEWS
index fd28293a..bb7b094f 100644
--- a/NEWS
+++ b/NEWS
@@ -78,7 +78,7 @@
  ** Bugfix: Show firmware version for YubiKey NEO correctly
  ** Windows: Show correct version number in .msi installers
  ** macOS: Fix issue with window positioning
- ** macOS: Fix occacional crashes on startup
+ ** macOS: Fix occasional crashes on startup
  ** Linux: Fix the app icon and desktop entry for the Snap package.
 
 * Version 5.0.3 (released 2020-04-14)
@@ -113,7 +113,7 @@ to uninstall the older version before using the .msi
  ** Feature: Select favorite credentials, available from the System Tray/Menu Bar
  ** Show some information about the connected YubiKey, such as firmware version and serial number
  ** Add experimental support for external smart card readers, enabling the use of a YubiKey over NFC
- ** Add initial accessability support
+ ** Add initial accessibility support
 
 * Version 4.3.6b (released 2019-06-11)
  ** Fixes problem where YubiKey was not being detected on macOS.
@@ -238,7 +238,7 @@ to uninstall the older version before using the .msi
 
 * Version 4.0.1 (released 2017-03-27)
  ** Bugfix: Follow color schemes better.
- ** Removed some spacing thath caused the layout to be slightly off.
+ ** Removed some spacing that caused the layout to be slightly off.
  ** Improved focus switching between search bar and credentials.
  ** Added keyboard shortcut (Ctrl/Cmd + F) for focus on the search bar.
  ** Select the top credential during search.
diff --git a/doc/Development.adoc b/doc/Development.adoc
index 1c906981..31a02a1f 100644
--- a/doc/Development.adoc
+++ b/doc/Development.adoc
@@ -45,7 +45,7 @@ Make sure the http://www.swig.org/[swig] executable is in your PATH.
 
     $ sudo apt install swig libu2f-udev pcscd libpcsclite-dev
 
-==== Linux (RPM-based distributons)
+==== Linux (RPM-based distributions)
 
     # Tested on Fedora 34
     $ sudo dnf install pcsc-lite-devel python3-devel swig
diff --git a/helper/authenticator-helper.spec b/helper/authenticator-helper.spec
index fb2aa9fa..5b89d6e3 100755
--- a/helper/authenticator-helper.spec
+++ b/helper/authenticator-helper.spec
@@ -24,7 +24,7 @@ a = Analysis(
 pyz = PYZ(a.pure, a.zipped_data, cipher=block_cipher)
 
 target_arch = None
-# MacOS: If the running Python process is "universal", build a univeral2 binary.
+# MacOS: If the running Python process is "universal", build a universal2 binary.
 if sys.platform == "darwin":
     r = subprocess.run(['lipo', '-archs', sys.executable], capture_output=True).stdout
     if b"x86_64" in r and b"arm64" in r:
diff --git a/lib/app/views/app_failure_page.dart b/lib/app/views/app_failure_page.dart
index 11619d71..0e8b46bb 100755
--- a/lib/app/views/app_failure_page.dart
+++ b/lib/app/views/app_failure_page.dart
@@ -38,7 +38,7 @@ class AppFailurePage extends ConsumerWidget {
 
     Widget? graphic =
         Icon(Icons.error, size: 96, color: Theme.of(context).colorScheme.error);
-    String? header = l10n.l_error_occured;
+    String? header = l10n.l_error_occurred;
     String? message = reason.toString();
     List<Widget> actions = [];
 
diff --git a/lib/l10n/app_de.arb b/lib/l10n/app_de.arb
index c5974cb4..bf1ef5a3 100644
--- a/lib/l10n/app_de.arb
+++ b/lib/l10n/app_de.arb
@@ -184,7 +184,7 @@
     "s_yk_not_recognized": "Geräte nicht erkannt",
 
     "@_general_errors": {},
-    "l_error_occured": "Es ist ein Fehler aufgetreten",
+    "l_error_occurred": "Es ist ein Fehler aufgetreten",
     "s_application_error": "Anwendungs-Fehler",
     "l_import_error": "Import-Fehler",
     "l_file_not_found": "Datei nicht gefunden",
diff --git a/lib/l10n/app_en.arb b/lib/l10n/app_en.arb
index 558875a1..1a62ebb5 100644
--- a/lib/l10n/app_en.arb
+++ b/lib/l10n/app_en.arb
@@ -3,7 +3,7 @@
 
     "@_readme": {
         "notes": [
-            "All strings start with a Captial letter.",
+            "All strings start with a Capital letter.",
             "Group strings by category, but don't needlessly tie them to a section of the app if they can be re-used between several.",
             "Run check_strings.py on the .arb file to detect problems, tweak @_lint_rules as needed per language."
         ],
@@ -184,7 +184,7 @@
     "s_yk_not_recognized": "Device not recognized",
 
     "@_general_errors": {},
-    "l_error_occured": "An error has occured",
+    "l_error_occurred": "An error has occurred",
     "s_application_error": "Application error",
     "l_import_error": "Import error",
     "l_file_not_found": "File not found",
@@ -485,7 +485,7 @@
     "l_generating_private_key": "Generating private key\u2026",
     "s_private_key_generated": "Private key generated",
     "p_warning_delete_certificate": "Warning! This action will delete the certificate from your YubiKey.",
-    "q_delete_certificate_confirm": "Delete the certficate in PIV slot {slot}?",
+    "q_delete_certificate_confirm": "Delete the certificate in PIV slot {slot}?",
     "@q_delete_certificate_confirm": {
         "placeholders": {
             "slot": {}
diff --git a/lib/l10n/app_fr.arb b/lib/l10n/app_fr.arb
index 75c70e4c..905cbf93 100644
--- a/lib/l10n/app_fr.arb
+++ b/lib/l10n/app_fr.arb
@@ -184,7 +184,7 @@
     "s_yk_not_recognized": "Appareil non reconnu",
 
     "@_general_errors": {},
-    "l_error_occured": "Une erreur est survenue",
+    "l_error_occurred": "Une erreur est survenue",
     "s_application_error": "Erreur d'application",
     "l_import_error": "Erreur d'importation",
     "l_file_not_found": "Fichier non trouvé",
diff --git a/lib/l10n/app_ja.arb b/lib/l10n/app_ja.arb
index 7b2074f6..69c1a3a9 100644
--- a/lib/l10n/app_ja.arb
+++ b/lib/l10n/app_ja.arb
@@ -3,7 +3,7 @@
 
     "@_readme": {
         "notes": [
-            "All strings start with a Captial letter.",
+            "All strings start with a Capital letter.",
             "Group strings by category, but don't needlessly tie them to a section of the app if they can be re-used between several.",
             "Run check_strings.py on the .arb file to detect problems, tweak @_lint_rules as needed per language."
         ],
@@ -184,7 +184,7 @@
     "s_yk_not_recognized": "デバイスが認識されない",
 
     "@_general_errors": {},
-    "l_error_occured": "エラーが発生しました",
+    "l_error_occurred": "エラーが発生しました",
     "s_application_error": "アプリケーションエラー",
     "l_import_error": "インポートエラー",
     "l_file_not_found": "ファイルが見つかりません",
diff --git a/lib/l10n/app_pl.arb b/lib/l10n/app_pl.arb
index 6477d32e..33a960ef 100644
--- a/lib/l10n/app_pl.arb
+++ b/lib/l10n/app_pl.arb
@@ -3,7 +3,7 @@
 
     "@_readme": {
         "notes": [
-            "All strings start with a Captial letter.",
+            "All strings start with a Capital letter.",
             "Group strings by category, but don't needlessly tie them to a section of the app if they can be re-used between several.",
             "Run check_strings.py on the .arb file to detect problems, tweak @_lint_rules as needed per language."
         ],
@@ -184,7 +184,7 @@
     "s_yk_not_recognized": "Urządzenie nie rozpoznane",
 
     "@_general_errors": {},
-    "l_error_occured": "Wystąpił błąd",
+    "l_error_occurred": "Wystąpił błąd",
     "s_application_error": "Błąd funkcji",
     "l_import_error": "Błąd importowania",
     "l_file_not_found": "Nie odnaleziono pliku",
diff --git a/windows/runner/win32_window.h b/windows/runner/win32_window.h
index c86632d8..e901dde6 100644
--- a/windows/runner/win32_window.h
+++ b/windows/runner/win32_window.h
@@ -77,7 +77,7 @@ class Win32Window {
   // OS callback called by message pump. Handles the WM_NCCREATE message which
   // is passed when the non-client area is being created and enables automatic
   // non-client DPI scaling so that the non-client area automatically
-  // responsponds to changes in DPI. All other messages are handled by
+  // responds to changes in DPI. All other messages are handled by
   // MessageHandler.
   static LRESULT CALLBACK WndProc(HWND const window,
                                   UINT const message,