The swifts are a family, Apodidae, of highly aerial birds. They are superficially similar to swallows, but are actually not closely related to passerine species at all; swifts are in the separate order Apodiformes, which they share with hummingbirds. The treeswifts are closely related to the true swifts, but form a separate family, the Hemiprocnidae.

Tribe Cypseloidini
Genus Cypseloides (9-10 species)
Genus
Streptoprocne (3-4 species)
White-collared Swift Streptoprocne zonaris

Tribe Collocaliini - swiftlets
Genus Collocalia (3-4 species)
Genus
Aerodramus (about 25 species, sometimes included in Collocalia)
Genus
Hydrochous - Giant Swiftlet
Genus
Schoutedenapus - African swiftlets (2 species)

Tribe Chaeturini - needletails
Genus Mearnsia (2 species)
Genus
Zoonavena (3 species)
Genus
Telacanthura (2 species)
Genus
Rhaphidura (2 species)
Genus
Neafrapus (2 species)
Genus
Hirundapus (4 species)
Genus
Chaetura (12 species)

Tribe Apodini - typical swifts
Genus Aeronautes (3 species)
Genus
Tachornis (3 living species)
Genus
Panyptila (2 species)
Genus
Cypsiurus (2 species)
Genus
Tachymarptis (2 species)
Genus
Apus (some 17 species)