Product Availability Manager v2
Deal of the day with Alerts v2
Deal of the day standard v2

For cs-cart v.2.2.x:
Changed the counter display from 5 : 6 : 7 to 05 : 06 : 07
for better appearance added 0 for one digit numbers and fixed the "1 days" issue in the Deal of the day add-ons, now will display 1 day, 2 days, etc.
Minor bug fix for Product Availability Manager v2: when a product was deleted missed function notification displayed. Fixed.

Demo