Pixel Art Studio - A purpose-built drawing tool for pixel artists
Filterloop - Filterloop is a fantastic photo editing application offering millions of effects to make your photo look beautiful and attractive.
Aseprite - Aseprite is an art program dedicated to the creation of pixel art.
RNI Films - Real film filters for iPhone photographers
Pixel Art to CSS - Draw and animate pixel art, export the results to CSS
Kamon - Kamon is an analog film camera introduced by Xiumei Xuan, which brings a lot of features for its users to enjoy crisp and unique photography right on their smartphones.