More like The Backworlds

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UpliftUniverse
universe13 books1980
About uplift and aliens.
“No species, the Galactics insist, ever climbs to sapience alone.”
from the catalogue
Start with Sundiver →
includes Uplift Storm, Uplift
Cities in FlightSeries
series10 books1950
completed
Science fiction and space opera, about space colonization, set in far future and space.
“The stories cover roughly two thousand years, from the very near future to the end of the universe.”
from the catalogue
Start with They Shall Have Stars →
Known SpaceUniverse
universe142 books1964
About aliens.
“Give a clever species a few centuries and a working fusion drive, and it will fill the sky with problems.”
from the catalogue
Start with Ringworld →
includes Ringworld, Fleet of Worlds, Man-Kzin Wars
CoDominiumUniverse
universe98 books1971
Military science fiction.
“The body of work runs along a few hard threads rather than one line.”
from the catalogue
Start with The Mote in God's Eye →
includes Moties, Laurie Jo Hansen, Falkenberg's Legion, War World
The TalentsUniverse
universe18 books1959
About psychic powers.
“Somewhere a Prime holds a Tower, gathers the gestalt of a generator's power, and flings a starship — or a single frightened child — across the light-years between worlds.”
from the catalogue
Start with The Rowan →
includes Tower and the Hive, Talents (Anne McCaffrey)
Legion of SpaceSeries
series7 books1947
completed
About aliens.
“The Medusae bear a vague resemblance to jellyfish, but are actually elephant-sized, four-eyed, flying beings with hundreds of tentacles.”
from the catalogue
Start with The Legion of Space →