Gemini Photos - Clean up your Camera Roll
Pepperfilters - Pepper's Snapchat Geofilter creator allows you to easily create a custom snapchat geofilter for your birthday, wedding or event.
PickStackr - Organize and manage your camera roll
Vidcode - Build your own Snapchat filters with code
Flic - Flic is a wireless Bluetooth-enabled button that acts as a shortcut to many actions on your wireless phone or other connected device.
Snapspot - Make yourself a perfect custom Snapcode