Where Stories
Come to Life
One app to write, organize, and publish your novel. Stop juggling five tools — craft your next masterpiece in one place.
Features
Everything You Need to Write
Powerful tools wrapped in a clean, minimal interface that stays out of your way.
Distraction-Free Editor
A minimal writing surface that keeps you focused on words, not toolbars. Fullscreen zen mode included.
Manuscript Organization
Chapters, scenes, and notes in a drag-and-drop outline panel. Restructure your story in seconds.
4-Stage Workflow
From messy ideas to polished manuscript: Braindump, Outline, Prose, Format. A clear path from spark to finished draft.
Story Bible
Track characters, locations, and lore across your entire manuscript. Never lose a detail again.
Mind Maps & Linking
Visualize your story structure and link ideas directly to your prose. See the big picture without losing the thread.
Offline First
Works without an internet connection. Your data stays on your machine — no cloud required.
Writing Goals
Set daily word-count targets and track streaks over time. Build the habit that finishes books.
Themes & Typography
Dark mode, sepia, and custom fonts so the editor feels like yours. Easy on the eyes, day or night.
Export Anywhere
Export your manuscript as PDF, EPUB, DOCX, or Markdown. Take your work wherever publishing takes you.
Preview
See It in Action
A clean interface designed for writers who want to focus on the story.
Editor View
Clean, minimal writing surface
Outline Panel
Drag-and-drop chapter management
Dark Mode
Write comfortably at any hour
AI Assist
A Council of Second Opinions
Stuck on a scene? Ask multiple AI models for suggestions, compare their takes, and pick the one that fits your voice. You stay in control — always.
Council of LLMs
Ask multiple AI models the same question and compare their answers side by side. Pick the best, discard the rest.
Bring Your Own Keys
Use your own API keys from the providers you trust. You choose the models, you control the cost. No middleman markup.
Publishing
Professional Book Formatter
Stop paying $150+ for a separate formatting app. Nebula handles the entire journey from draft to publish-ready file — built right in.
Choose from book-interior templates designed for print and digital
Publication-quality output ready for KDP, IngramSpark, or any retailer
Title pages, copyright, dedication, about the author — all handled
Embed your ISBN and generate barcodes for print-ready covers
Nebula Cloud
Write from Anywhere
with Nebula Cloud
The hosted version of Nebula — no install required. Start writing in seconds from any device.
Seamlessly across all your devices
Version history so you never lose a word
Invite editors and co-authors
No subscription lock-in — skip a month, pay nothing
Pricing
Simple, Honest Pricing
The desktop app is free forever. Cloud plans only bill for the months you actually use.
- Full desktop app
- All writing & organization tools
- Offline first — your data stays local
- Export to PDF, EPUB, DOCX
- Open source (MIT)
- Everything in Free
- Nebula Cloud access
- Real-time sync across devices
- Automatic cloud backups
- AI Assist & Council of LLMs
- Everything in Premium
- Real-time collaboration
- Professional book formatter
- Publishing integrations
- Priority support
Open Source
Transparent by Default
Fully Auditable
Every line of code is public. Review it, fork it, or contribute.
No Telemetry
No tracking, no analytics, no data collection. Your writing is yours alone.
No Lock-In
Standard file formats. Export everything. Switch tools anytime.
Licensed under the MIT License. See our open source dependencies
FAQ
Frequently Asked Questions
From bucket list to bookshelf
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