StoryMill - Developers and publishers of Mac, Win, and iOS productivity, home and office and writing software such as MacGourmet, Paperless and many more. Based in MN.
bibisco - bibisco is a novel writing software.
BlankPage - Stay motivated to write, and finish your story
Manuskript - Open-source tool for writers.
WriteFreely - Write Freely is free and open source software for starting a minimalist, federated blog — or an entire community.
Novlr - Online word processor and organizer for novel writing.