One application to draft, organise, and publish the novel you have been carrying in your head — without juggling five different tools or paying five different subscriptions.
Powerful tools wrapped in a clean, minimal interface that stays out of your way — the whole craft of the novel, in one place.
A minimal writing surface that keeps you focused on words, not toolbars. Fullscreen zen mode included.
The DraftChapters, scenes, and notes in a drag-and-drop outline panel. Restructure your story in seconds.
The StructureFrom messy ideas to polished manuscript: Braindump, Outline, Prose, Format. A clear path from spark to finished draft.
The ProcessTrack characters, locations, and lore across your entire manuscript. Never lose a detail again.
The CanonVisualise your story structure and link ideas directly to your prose. See the big picture without losing the thread.
The WebWorks without an internet connection. Your data stays on your machine — no cloud required.
The SanctuarySet daily word-count targets and track streaks over time. Build the habit that finishes books.
The DisciplineDark mode, sepia, and custom fonts so the editor feels like yours. Easy on the eyes, day or night.
The MoodExport your manuscript as PDF, EPUB, DOCX, or Markdown. Take your work wherever publishing takes you.
The DepartureA clean interface designed for writers who want to focus on the story — not the software.
The night sky stretched infinitely above the old lighthouse. Clara pressed her forehead against the cold glass, wondering if anyone else in the world was looking at the same constellation tonight.
Chapter 1 · The Lighthouse
Chapter 2 · The Telegram
Chapter 3 · The Passage
Chapter 4 · The Storm
Chapter 5 · The Harbour
Morning came grey and reluctant. The telegram waited on the kitchen table where she had left it, folded once, as if folding it again might soften what it said.
A council of readers, summoned to one page.
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.
Ask multiple AI models the same question and compare their answers side by side. Pick the best, discard the rest.
Use your own API keys from the providers you trust. You choose the models, you control the cost. No middleman markup.
Stop paying $150+ for a separate formatting app. Nebula handles the entire journey from draft to publish-ready file.
The hosted version of Nebula — no install required. Start writing in seconds from any device.
The desktop app is free forever. Cloud plans only bill for the months you actually use.
Every line of code is public. Review it, fork it, or contribute.
No tracking, no analytics, no data collection. Your writing is yours alone.
Standard file formats. Export everything. Switch tools anytime.
Licensed under the MIT License. See our open source dependencies →
Yes. The desktop app is completely free and open source under the MIT license. Nebula Cloud is a paid service, but you only pay for the months you actually use — no long-term commitment, no subscription lock-in.
Nebula runs natively on Windows, macOS, and Linux. Nebula Cloud works in any modern web browser — Chrome, Firefox, Safari, and Edge.
The desktop app stores everything locally on your device — we never see it. Nebula Cloud stores data in encrypted AWS infrastructure. You own your data and can export or delete it at any time.
Yes. Nebula can import DOCX, Markdown, and plain text files. Formatting and structure are preserved where possible, so you can pick up right where you left off.
Nebula is a writing tool first. AI features are optional and never in your way. If you choose to use them, you bring your own API keys and pick which models to use — we don't mark up costs or lock you into a single provider. Your writing is always yours.
Nebula is maintained by a small independent team of developers and writers. The project is open source, so anyone can inspect the code, report issues, or contribute improvements.
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