diff --git a/.gitignore b/.gitignore
index d7c4cdefde..44fe5e4ba4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -192,7 +192,7 @@ dirs.sln
 
 
 ##################
-# XCode
+# Xcode
 ##################
 Index/
 Logs/
diff --git a/build/SharedVersion.props b/build/SharedVersion.props
index dad40cccb7..3d9548ab9d 100644
--- a/build/SharedVersion.props
+++ b/build/SharedVersion.props
@@ -11,7 +11,7 @@
     <LangVersion>latest</LangVersion>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <PackageIcon>Icon.png</PackageIcon>
-    <PackageDescription>Avalonia is a cross-platform UI framework for .NET providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, MacOS and with experimental support for Android, iOS and WebAssembly.</PackageDescription>
+    <PackageDescription>Avalonia is a cross-platform UI framework for .NET providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, macOS and with experimental support for Android, iOS and WebAssembly.</PackageDescription>
     <PackageTags>avalonia;avaloniaui;mvvm;rx;reactive extensions;android;ios;mac;forms;wpf;net;netstandard;net461;uwp;xamarin</PackageTags>
     <PackageReleaseNotes>https://github.com/AvaloniaUI/Avalonia/releases</PackageReleaseNotes>
     <RepositoryType>git</RepositoryType>
diff --git a/native/Avalonia.Native/src/OSX/window.mm b/native/Avalonia.Native/src/OSX/window.mm
index 1de82d9f39..9b703c4838 100644
--- a/native/Avalonia.Native/src/OSX/window.mm
+++ b/native/Avalonia.Native/src/OSX/window.mm
@@ -735,7 +735,7 @@ private:
                 return E_INVALIDARG;
             
             // If one tries to show a child window with a minimized parent window, then the parent window will be
-            // restored but MacOS isn't kind enough to *tell* us that, so the window will be left in a non-interactive
+            // restored but macOS isn't kind enough to *tell* us that, so the window will be left in a non-interactive
             // state. Detect this and explicitly restore the parent window ourselves to avoid this situation.
             if (cparent->WindowState() == Minimized)
                 cparent->SetWindowState(Normal);
diff --git a/readme.md b/readme.md
index 96c7937559..7e32dbc321 100644
--- a/readme.md
+++ b/readme.md
@@ -5,7 +5,7 @@
 
 ## 📖 About 
 
-Avalonia is a cross-platform UI framework for dotnet, providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, MacOs. Avalonia is mature and production ready. We also have in beta release support for iOS, Android and in early stages support for browser via WASM.
+Avalonia is a cross-platform UI framework for dotnet, providing a flexible styling system and supporting a wide range of Operating Systems such as Windows, Linux, macOS. Avalonia is mature and production ready. We also have in beta release support for iOS, Android and in early stages support for browser via WASM.
 
 ![image](https://user-images.githubusercontent.com/4672627/152126443-932966cf-57e7-4e77-9be6-62463a66b9f8.png)
 
diff --git a/src/Avalonia.DesignerSupport/Remote/HtmlTransport/webapp/src/index.html b/src/Avalonia.DesignerSupport/Remote/HtmlTransport/webapp/src/index.html
index f5847cdd58..cf76de0077 100644
--- a/src/Avalonia.DesignerSupport/Remote/HtmlTransport/webapp/src/index.html
+++ b/src/Avalonia.DesignerSupport/Remote/HtmlTransport/webapp/src/index.html
@@ -9,6 +9,6 @@
 <div id="app">
     <center>Loading...</center>
 </div>
-<noscript>Javascript is required</noscript>
+<noscript>JavaScript is required</noscript>
 </body>
 </html>
diff --git a/src/Web/Avalonia.Web.Blazor/Interop/Typescript/types/dotnet/index.d.ts b/src/Web/Avalonia.Web.Blazor/Interop/Typescript/types/dotnet/index.d.ts
index ff6dc4a8f8..932dfa1e1f 100644
--- a/src/Web/Avalonia.Web.Blazor/Interop/Typescript/types/dotnet/index.d.ts
+++ b/src/Web/Avalonia.Web.Blazor/Interop/Typescript/types/dotnet/index.d.ts
@@ -6,7 +6,7 @@
 
 // Here be dragons!
 // This is community-maintained definition file intended to ease the process of developing
-// high quality JavaScript interop code to be used in Blazor application from your C# .Net code.
+// high quality JavaScript interop code to be used in Blazor application from your C# .NET code.
 // Could be removed without a notice in case official definition types ships with Blazor itself.
 
 // tslint:disable:no-unnecessary-generics
diff --git a/tests/Avalonia.IntegrationTests.Appium/readme.md b/tests/Avalonia.IntegrationTests.Appium/readme.md
index 2a8c3068ba..ee630a31fd 100644
--- a/tests/Avalonia.IntegrationTests.Appium/readme.md
+++ b/tests/Avalonia.IntegrationTests.Appium/readme.md
@@ -11,12 +11,12 @@
 - Run WinAppDriver (it gets installed to the start menu)
 - Run the tests in this project
 
-## MacOS
+## macOS
 
 ### Prerequisites
 
 - Install Appium: https://appium.io/
-- Give [XCode helper the required permissions](https://apple.stackexchange.com/questions/334008)
+- Give [Xcode helper the required permissions](https://apple.stackexchange.com/questions/334008)
 - `cd samples/IntegrationTestApp` then `./bundle.sh` to create an app bundle for `IntegrationTestApp`
 - Register the app bundle by running `open -n ./bin/Debug/net6.0/osx-arm64/publish/IntegrationTestApp.app`