Post 'em here if you've got 'em.
Rules:
1. Be as specific as possible with your postings (what you're looking for, word counts, pay, etc.).
2. Be specific about how interested parties should contact you.
3. Don't blow this for everyone.
I keep a google doc that I am frequently updating with current open calls I want to write something for. Here's what I have at the moment, but it's been like a week or two since I researched new markets.
A Breath from the Sky: Unusual Stories of Possession
Deadline: January 31, 2017
Payment: $0.02 per word
Word count: 1.5k-7k
http://martianmigrainepress.com/A-Breath-from-the-Sky
Ride the Star Wind: Cthulhu, Space Opera, and the Cosmic Weird
Deadline: January 31, 2017
Payment: $0.08 per word
Word count: 3k-6k
http://www.brokeneyebooks.com/submissions.html
Retro Future: Love
Deadline: February 1, 2017
Payment: $0.06 per word
Word count: 250-500 (longer work considered)
https://www.galileogames.com/retro-future/
Nasty: Fetish Fights Back
Deadline: February 15, 2017
Payment: $0.06
Word count: 1.5k max
https://www.thenastymag.com/submissions/
Appetites
Deadline: February 28th, 2017
Payment: $0.02 per word
Word count: 6k max
https://parsecink.submittable.com/submit/72303/2017-triangulation-appetites
Retro Future: Games
March 1, 2017
Payment: $0.06 per word
Word count: 250-500 (longer work considered)
https://www.galileogames.com/retro-future/
A Fool For You
Deadline: March 31, 2017
Payment: $200
Word count: 10k-20k
https://www.lessthanthreepress.com/anthology-submissions/
Would But Time Await: An Anthology of New England Folk Horror
Deadline: April 2017
Payment: $75
Word count: 2k-10k
https://orfordparishbooks.com/2016/06/21/call-for-submissions-for-new-england-folk-horror-anthology/