Snapseed - Snapseed is a photo enhancement and sharing app with a powerful suite of imaging filters and tools...
Open Camera - Open Camera is an open-source camera app for Android phones and tablets.
FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts
Secure Camera - Modern camera app focused on privacy and security with QR & barcode scanning.
Paper Camera - Paper Camera is the BEST Sketch/Cartoon app in the App Store.
PhotonCamera - Android Camera that uses enhanced image processing.