docs: readme update

Author: abhimanyu003

README.md

@@ -114,6 +114,12 @@ The application includes comprehensive fallback mechanisms:
 sudo pttr
 ```
 
+## Similar tools
+
+Other similar tools from which pttr draws inspiration
+
+* https://github.com/productdevbook/port-killer ( macOS only )
+* https://github.com/treadiehq/port-kill ( macOS only )
 
 # Contribution