Originally Posted by GeoffR
(Free epub, mobi, or read online)
Boolean Gate, by Walter Jon Williams (Novella)
Hard Silver, by Steven R. Boyett. (Novelette)
Raptors, by Conrad Williams. (Novelette)
Surfacing, by Walter Jon Williams. (Novella, not included in the epub/mobi version?)
You can also get earlier issues if you don't already have them...