Reddit List - Tracking the top 5000 subreddits
Filtron - Create and share your own photo filters on Mac & iPhone
Unreadit - Weekly newsletters with the best Reddit content
CSSGram - Recreate Instagram filters with CSS filters and blend mode
YesPromo - Free database of 100+ successful self promotion Reddit posts
Onehub - Onehub helps businesses securely share and control files in the cloud.