Purrge - Delete iOS photos faster with drag-to-select & upward swipe
Clean Master - Some users swear by it, some call it a glorified snake oil that does more harm than good. That can be said about any snake oil, but what specific brand of snake oil can boast almost a billion downloads around the world?
Gemini Photos - Clean up your Camera Roll
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
PickStackr - Organize and manage your camera roll
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.