Hourglass - Hourglass is the most advanced simple countdown timer for Windows.
Solid Explorer - Solid Explorer is a powerful Android file manager featuring access to most popular cloud storages, root access and easy extensibility.
wnr - Better than pomodoro, this timer app balances work and rest.
Amaze File Manager - Free and open-source Android file manager with no ads.
Free Countdown Timer - Free Countdown Timer is a free, full-featured and user-friendly countdown timer for Windows
Total Commander - A Shareware file manager for Windows® 95/98/ME/NT/2000/XP/Vista/7, and Windows® 3.1.