Foundation and Earth - 1986 by Asimov himself
Not until Asimov’s very last book in the series, IIRC. R Daneel showed up, in the moon, when the heroes finally found Earth, and explained how the robots had eliminated the aliens (from all of history, so it makes for an interesting fit into this thread) to make way for human expansion.
Wasn’t The End of Eternity somehow linked in to all this?
I’m pretty sure I read this, but couldn’t recall if it was Asimov, or one of the “Three B’s”. (I had thought that was by Brin. But maybe he reiterated the same thing in his book.) I had read the first three Foundations so long ago, and when I was in High School, so I couldn’t be sure I hadn’t missed some subtle things in those books.
I believe Crest of the Stars doesn’t have any actual aliens, just humans from various colonies, and an genetically enhances set of humans that everyone treats like aliens.
It was originally a science fiction book in Japanese, but there is anime and manga of the entire series, and at least some of the sequels. That said, I’ve only seen the first 12 episodes when they were first translated and shown on TechTV (now G4), so I don’t know for sure about aliens after that.
Their FTL travel is neat in that it requires using 3D bubbles in a sort of 2D space.
Daneel was also in Prelude to Foundation, remember.
Are you sure? I seem to remember they used warp technology for space travel (on the other hand I was heavily playing the RPG Fading Suns at the same time, and I tend to confuse the two a lot). Great series btw (really liked the whole "confined to the solar system/ bits of Earth reconstructed on other planets).
That said, there was that critter in the Toys in the attic episode, I wont spoil its possible point of origin, but we’re not sure it isnt some kind of alien lifeform.
Demon Princes? You don’t even get past Star King - the eponymous villain certainly looks human and is capable of passing as such for a long time, but comes of radically different ancestry, and of a unisexual species that reproduces in a completely different manner to humanity. There are infrequent references to “autochthons” in other parts of the Oikumene too, and indeed the long-lost ancient race that brought humans to Gnarumen in antiquity and caused the Star Kings to become human-like before the true men were finally exterminated. Creatures such as the hyrcan major may not qualify as “intelligent” aliens, true, and I think that Krokinole Imps are stated somewhere to be an offshoot of humanity, ditto the Tadusko-Oi of Thamber, while the dryads of Teehalt’s World may or may not be intelligent (Lugo Teehalt himself considers them “wise” even if not, and they are aware enough to react with seeming dismay to the death of a tree-wasp which may be larval form of their own species).
The Honor Harrington series comes close.
Treecats are revealed to be more intelligent than originally thought, and there are the natives in the 1st book.
But there are no Spacefaring aliens (ok, a check here http://en.wikipedia.org/wiki/List_of_alien_species_in_the_Honorverse says the Alphanes were spacefaring)
Brian
I happened to discuss this issue (and the very brief mention of a real alien species in the Foundation universe) on another thread this week http://boards.straightdope.com/sdmb/showpost.php?p=14499681&postcount=16
I recall no ETs in the Dorsai novels, but I haven’t read them all.
But there’s no FTL involved. Remember the scene where Libby is explaining to Long how the drive works? He says something like “all I have to do is clamp this thing to a bulkhead or any part of the ship, and we will recede from the Sun at a speed just below the speed of light.” So they achieved manned interstellar spaceflight the real way—by traveling at 99.999999… percent of c.
Also, if you want to get technical, the entire series was about aliens. They got to earth, found it already populated by primitive earthlings who didn’t originate from kobol.
But the method used to get them home is FTL (and maybe the method used to get them from the first alien planet to the second alien planet is too - don’t remember) - they are in a “space warp” of some kind for several months and when they arrive at the solar system, Libby has to figure out what year it is.
The username/post content combination can’t possibly be a coincidence. 
I hadn’t noticed that. Pretty funny…
I was going to mention this series because I couldn’t remember any aliens. Maybe I haven’t read them all - is there one book in particular where this happens?
Roddy
I’ve read the last two long ones, and I don’t recall any aliens, so good catch.
That;s nitpicking – they cdertainly had the capability for FTL, if they still had the caution not to use it. Besides, Number of the Beast and The Cat Who Walked Through Walls (which definitely share characters with books squasrely in the Future History series) had space travel plus time travel, which adds up to FTL in any reasonable definition of same.
The treecats are manipulating their human counterparts. They even got them to start a treecat colony on Grayson.
Mark my words. Telepathic puppeteers, they are. We just happen to find them when we (humans) had a large technological and population advantage. A couple thousand years from now: The Treecat Galactic Empire.