LokLok: Connected Lock Screen for Android

Now you can sync with your friends from your device lock screen only, you can send images, canvas etc.. Directly and receive the same. When you connect with one or more people your lock screens become synchronised. You will all see the same screen every time you switch on your phones. Whatever one of you does on that screen is updated on everyone else’s phone immediately and silently.

The app is still in beta state and devs want your feedback to make it better, check out the video below

NiLS Lockscreen Notifications - Application for Android

There are lots of Lockscreen notifications apps are available in market but this one is the best I have seen. The notifications appears in a very proper way and you can interact with them & also customize them as per your choice. And most importantly it supports Android 4.0 & up, as many Lockscreen notification apps require Android 4.3 minimum which is not available in most of devices till now.

And it's very similar to the notifications in upcoming Android L

It displays a list of your notifications on top of your lock screen and it doesn't need a widget to be placed. it supported on most of the lock screens including WidgetLocker, Cover, GoLocker and many more. Check out the hands on video below