Do you know any? Here's some I know about: Sci-fi stories by Charles Stross here on this website which also contains lots of other free sci-fi stories by notable authors. Sci-fi stories and novels by Cory Doctorow at his website. Sci-fi stories by Stephen Baxter at his website. Includes an AH story "First to the Moon!". AH stories by Kim Newman and Eugene Byrne here. Doctor Who ebooks from the BBC. "The Well-Mannered War", "Human Nature", "Lungbarrow" and "The Dying Days" are all better than average. Free stories by notable sci-fi authors at scifi.com. I Have No Mouth, and I Must Scream by Harlan Ellison, at scifi.com but strangely not listed on the webpage above. God's Debris by Scott Adams ("Dilbert"). More of a philosophical ramble than a story, really, but I liked it. 1632 by Eric Flint. Well known ISOT story. One of many books in the Baen Free Library ("1633 and "Grantville Gazette Volume 1" are there too).