Filtron - Create and share your own photo filters on Mac & iPhone
Pepperfilters - Pepper's Snapchat Geofilter creator allows you to easily create a custom snapchat geofilter for your birthday, wedding or event.
Web Photo Filter - A web component to apply Instagram-like filters to photos
Snaptag Editor - Create your own custom Snapchat code 👻
CSSGram - Recreate Instagram filters with CSS filters and blend mode
Snapchat Geofilters - Bespoke filters for different locations on your snaps.