Open Library
Horror
Fear is the oldest story.

Mapping the Interior
Stephen Graham Jones

Classic Short Stories
Alphonse Daudet

The Woods All Black
Lee Mandelo

My Darling Dreadful Thing
Johanna van Veen

Monstrilio
Gerardo Sámano Córdova

The Vampire King
Michael A. Martin

Thaw
Bryan Dunn

Clive Barker's A-Z of horror
Clive Barker
Tales (Cask of Amontillado / Descent Into the Maelstrom / Fall of the House of Usher / Gold Bug / Ligeia / Masque of the Red Death / Murders in the Rue Morgue / Pit and the Pendulum / Purloined Letter / William Wilson)
Edgar Allan Poe

Random Synapse Misfire, Vol. Two
Jeb Bohn

The Great Book of Thrillers
H. G. Wells

Future Tense
John Brosnan

Grave doubts
John Peel

Rêves et cauchemars-1
Stephen King

Harrow County, Vol. 1
Cullen Bunn
Terror all around
Amy Kalmanofsky

Thirst
Guy N. Smith

Chasing the Boogeyman
Richard Chizmar

Hunted
Darcy Coates

Blood Kin (Pinnacle Horror)
Ronald Kelly