Books with Similar Traits with A Song of Ice and Fire Series?

Robin Hobb's many trilogies come the closest of Martin in terms of complexity of plot and development of character. They're also fantasies set in quasi-medieval worlds, but with totally different world-building and a different level of magic as plot element. There's greater character development of the main character in some of them.

The first series I read was the Assassin series, starting with Assassin's Apprentice. I also enjoyed the Live Ships series, even though the premise sounds ridiculous. (It isn't.)

Two known series that's close to A Song of Ice and Fire is Glen Cooks "Black Company" and novels by Joe Abercrombie. You won't find purple prose in them or literary quality, but you will find political power struggles, gorey violence, questionable morality issues, realistic in a gritty sense of the word, no gods, little magic, and follows a select few characters (only three in most Joe Abercrombie novels of his first series).

Stranger In A Strange Land (1961) by Robert A. Heinlein.

i've got not ever examine any books as sturdy as asoiaf, yet i attempt to fill the time between not and winds of iciness with different sequence, corresponding to it. The Dragonriders of Pern sequence is incredibly sturdy and there are approximately 15 books in that sequence, so as that could shop you going for a whilst.