Apps similar to Celtx include Scrivener. It's paid, but Manuskript and Quoll Writer are free. Other options are Story Architect (STARC), Final Draft, GrinTale and Gingko Writer. There's no shortage of Novel Authoring Tools like Celtx, with more than 50 alternatives for the web, Windows, Mac, Linux and iPhone.
Tailored for extensive writing, this tool offers flexible structure and organization, integrates project outlines, supports various formats, and allows reorganization through drag and drop, ensuring research materials are within reach for efficient work.
United Kingdom
Open-source software offering a hierarchical outliner, distraction-free editor, character management, plot tools, Snowflake method support, section multi-organization, customizable writing workflows, cross-platform availability, and export to standard formats.
France
EU
A smooth yet powerful writing experience for devoted authors. With only wanted features and native workflow it runs faster than all your previous apps combined.
Focus on your words not the interface. Quoll Writer is a writing application that helps you focus on your words. Clean and uncluttered. Feature rich. Features are where you would expect them to be.
Australia
Use your creative energy to focus on the content; let Final Draft take care of the style. Final Draft is the number-one selling word processor specifically designed for writing movie scripts, television episodics and stage plays.
United States
Cloud-based novel writing platform with tree-structured binder, corkboard, outliner, detailed character sheets, mind mapping, DOCX import with auto chapters, PDF/DOCX/EPUB export, built-in encyclopedia, distraction-free writing, and multilingual support.
ItalyEU
Gingko Writer is a text editor that uses a tree-like structure to help you organize and visualize your thoughts, making it easier to outline, draft, and refine complex texts.
United States
Trelby is simple, fast and elegantly laid out to make screenwriting simple. It is infinitely configurable.
United States
Untold Novel is a fresh new approach to planning your next bestseller. It helps you keep all your notes, ideas, characters, locations, and much more organized in one convenient place.
Scrite is an open-source screenwriting application based in Bengaluru, India. Unlike most screenwriting tools designed primarily for English, Scrite natively supports Indian language screenwriting; at launch it supported 11 Indian languages including Tamil, Malayalam, Kannada...
India
Fade In Professional Screenwriting Software is a complete application for writing motion picture screenplays, including tools for outlining, organizing, and navigating, plus extensive screenplay formatting and robust tools for managing rewrites and revisions.
Canada
Modern workspace for novels with ethical AI that analyzes writing but never writes, live readability, import/export, auto-save, full version history, character and plot tools, structured critique, and provenance tracking while ensuring all text remains original.
Norway
