*NEW: Improved support for Android 4.4 KitKat. However - deleting messages and marking messages as read from the popup is no longer possible in Android 4.4 KitKat.
*NEW: Improved support for when Hangouts is set as your SMS app (it does not work with regular Hangouts messages)

SMS Popup provides a convenient popup dialog when a message is received that allows you to quickly read and reply to messages. It also provides in-depth customization of message notifications including contact specific sound, vibrate and LED settings.

NOTE: SMS Popup does mark message as "read" - if the notification tray icon does not disappear, make sure you disable the system messaging app notifications and use SMS Popup's notifications instead. Please see FAQ for more information.

Full feature list:
-convenient popup window on incoming message
-quickly reply, delete or close the message
-built-in "quick reply" for even faster messaging directly from popup window
-have your messages read to you using text-to-speech
-reply to messages using the system voice recognition
-customize notifications including sound, vibrate pattern, LED color (if available) and notification icon
-also customize notifications for individual contacts
-setup notification reminders (repeating notifications if you miss the first one)
-optional privacy mode to hide sender name and message contents

Recent changes:
Updated to work on Android 4.4 KitKat (with some caveats, see app description)
Updated to work with Hangouts