Write offline.
Your manuscript stays yours.
Multi-pane markdown editor for novels, screenplays, and non-fiction. Outline, draft, and polish — all without uploading to the cloud.
Download Free TrialThe morning light filtered through the dusty curtains, casting long shadows across the wooden floor. Sarah stood by the window, coffee in hand, watching the empty street below.
It had been three weeks since the letter arrived. Three weeks of sleepless nights and unanswered questions.
She needed to made a decision soon.
Built for the craft, not the data — by a writer who uses it daily.
Your writing stays yours.
✓ No content storage — Manuscripts stay on your device or your GitHub
✓ No AI training — Your writing is never used to train models
✓ Minimal data collection — Only what's needed for service
Built for serious writers
Professional writing software built for privacy and power.
Multi-pane editing
See your whole story at once. Outline, draft, and notes — side by side. No window juggling, no context loss.
Write anywhere, sync later
Grammar checking, spellcheck, and editing work offline. Coffee shop, airplane, cabin — write without internet. Sync when you're ready.
Catch errors privately
Offline grammar finds mistakes without uploading your manuscript. Your unpublished work stays on your device, not in the cloud.
Try Umbral Ink free for 30 days
No credit card. No cloud upload required. Just download and write.