Helium - Helium lets you accept payments by credit card for anything you want to sell online.
Year In Progress - Day / month / year progress bars 📊 in your taskbar
PiP for Mac - Always on top window preview similar to the popular windows only OnTopReplica
CUBI - See your life in weeks
PiPifier - PiPifier is a macOS 10.
Memento Mori - A little stoic reminder page