3rd Party App Store IPAs.

Scylla
Probably the best 3rd party app store out there for iOS!

SideStore
SideStore is an alternative app store

Scarlet
Scarlet is a 3rd party appstore.

TutuBox
Apple’s least favourite 3rd Party Store.

Panda Helper
Panda Helper is one of the best 3rd-party App Store.

iOSGods
iOSGods represents one of the latest third-party apps.