docs: adding alternatives

README.md

@@ -16,14 +16,6 @@ On macOS there is an app cycling shortcut which doesn't let you select between w
 * Holding `control` after pressing a cycle shortcut will show the UI
 * Releasing `control` or clicking on a window will focus it
 
-# Screenshots
-
-[![Screenshot](docs/img/alt-tab-macos/5%20windows%20-%202%20lines.png)](docs/img/alt-tab-macos/5%20windows%20-%202%20lines.png)
-
-[![Screenshot](docs/img/alt-tab-macos/6%20windows%20-%202%20lines.png)](docs/img/alt-tab-macos/6%20windows%20-%202%20lines.png)
-
-[![Screenshot](docs/img/alt-tab-macos/dark-background.png)](docs/img/alt-tab-macos/dark-background.png)
-
 # Features
 
 * Delay before showing the UI to avoid flashing (default 200ms)
@@ -33,3 +25,27 @@ On macOS there is an app cycling shortcut which doesn't let you select between w
 * Window titles will truncate with an ellipsis if they don't fit
 * Thumbnails have a maximum width and height to help visualize very long, tall, small, big windows
 * Fast. There is no benchmark at the moment but energy was spent making sure the UI is responsive
+
+# Alternatives
+
+Before building my own app, I looked around at similar apps. However, none was completely satisfactory so I rolled my own. Also the almost-good-enough apps are not open-source.
+
+* [HyperSwitch](https://bahoom.com/hyperswitch) and [HyperDock](https://bahoom.com/hyperdock)  
+  Free but closed-source. Things I would change: thumbnails are too small, app icon is on top of the thumbnail
+* [Witch](https://manytricks.com/witch/) and [Context](https://contexts.co/)  
+  10-15$. focus on text instead of thumbnails
+* Built-in [MissionControl](https://en.wikipedia.org/wiki/Mission_Control_(macOS\))  
+  No keyboard support
+* Command-tab  
+  Only see apps, not windows (note: can press down to see window of selected app)
+* Command-`  
+  Cycles through tabs and windows, but only of the same app. No direct access
+
+# Screenshots
+
+[![Screenshot](docs/img/alt-tab-macos/5%20windows%20-%202%20lines.png)](docs/img/alt-tab-macos/5%20windows%20-%202%20lines.png)
+
+[![Screenshot](docs/img/alt-tab-macos/6%20windows%20-%202%20lines.png)](docs/img/alt-tab-macos/6%20windows%20-%202%20lines.png)
+
+[![Screenshot](docs/img/alt-tab-macos/dark-background.png)](docs/img/alt-tab-macos/dark-background.png)
+