HTC has released an attractive Lock Screen app for its devices that brings weather information, notifications and clock on the lockscreen, which means you do not need to unlock and type the password every time to get these information. You can download and install the HTC Lock screen application directly from the Play Store.
Besides the aesthetic beauty it brings to the device, the HTC Lock Screen app also lets you access BlinkFeed by swiping right, swiping left brings Widget Home and swiping up lets you access previously opened app.
The clock widget on the top left corner looks fine and weather widget on top right corner is minimalistic and looks quite nice. Below the clock and weather widget, you can view all the notifications without unlocking your device.
Unfortunately, the app is not compatible with all devices. It is designed for HTC phones and only works on that devices. Other phones are not supported. You can download the app from Play Store.