Critters Workshop is an active, free online critique group for writers of Science Fiction, Fantasy, and Horror, operating since 1995. It remains open to new members and submissions, with detailed guidelines available on their website.
Critters.org began as an online workshop/critique group for serious Science Fiction, Fantasy and Horror writers. It evolved into a set of workshops for all styles of fiction and artistic endeavors.
How it works: Writer's submit a short story or chapters of a novel. Manuscripts are emailed in Critter friendly format and enter a queue. Participating writers critique the work for elements like plot, characterization, setting, logic of the underlying idea, effectiveness of the opening and ending, and all elements related to quality storytelling and creating a saleable manuscript.