For some other variants on post-apocalyptic fiction, try:
- "Brain Wave" by Poul Anderson
- "Godspeed" by Charles Sheffield
- "The Forlorn" by Dave Freer
- "Simply Human" by L. Warren Douglas
- "Off Armageddon Reef" by David Weber
- "A Hymn Before Battle" by John Ringo
I'm not sure whether the first two are available in bits, but the others can all be found at Baen's Webscriptions site. I note that I've taken a rather expansive definition of 'post-apocalyptic' -- some of these (The Forlorn, Off Armageddon Reef') involve the near-destruction of humanity with a few survivors on some other planet. Or the 'apocalypse' isn't quite what you might think (Brain Wave). Or the author actually kills off 95%+ of humanity on-screen during the course of the series (the Ringo 'Posleen' series starting with 'A Hymn Before Battle', which begins with everything seeming hunky-dory).
Xenophon