Scrivener - Scrivener is a content-generation tool for composing and structuring documents.
Scritika - Scritika is advanced-level writing software that helps the writer to tell their stories in a creative and smart way, and it encourages you to compose the stories quickly.
Celtx - Celtx is a scriptwriting software platform with applications in a wide range of mediums but that specializes in helping screenwriters.
Dabble Writer - Writing software for novelists.
Trelby - The free, multiplatform, feature-rich screenwriting program!
SHAXPIR - A modern cloud workspace for fiction writing & worldbuilding