- Days - Keeping track of events
- Days Between Two Dates
- Count Suruo - days count
- Days Countdown - date reminder
- Days Counter Calculator
- Days Counter: Event Countdown
- Days Left
- Days Left - Countdown to Event Date
- Days Left Lite
- Days Matter Air - Countdown
- Days tracking
- Days Since: Stop Habit Tracker
- Days until - countdown widget
- Days Until Date Alarm - New Years, Wedding, Birthday Countdown
- Daysi Family App
- DaysInARow
- DaysLeft LT
- DaySmart Body Art Software
- DaySmart Pet Software
- DaySmart KIOSK
- DaySmart Salon Software
- DaySmart Spa Software
- DaysPast
- DayspringCare App
- DayStamp - Habit Tracker
- DaysUntil Countdown
- DayTimer
- Dayton Collects
- Dayton Delivers 2.0
- Dayton Human Relations Council
- Daytona - Datatec
- Daytona PH
- Daytrip Driver
- Daytrip Tasks
- Dayway
- Dayzio
- Dazoo
- DA智联
- DB-Text
- Db2 Web Query
- DB2Prog2 - DB2 Client
- DBA PRO
- DBANKTOKEN
- DBBDATA.online
- DBC Offices Connect
- DBGB mBanking
- DBLock
- DBManage-mysql postgres mssql