Mac OS
1

System-wide search mechanism on MacOS.

<HINT:SPTOGHTLI>

SPOTLIGHT

2

MacOS's hard disk encryption utility.

<HINT:  ELFI VUATL>

FILE VAULT

3

One of MacOS's security feature.

<HINT: ETAGKPEEER>

GATEKEEPER

4

MacOS's native office suite

<HINT: WKORI> 

IWORK

5

MacOS's feature of device transition.

<HINT: CONTIYTIUN>

CONTINUITY

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