Octarine is unclaimed —

Octarine

Take back control of your writing·octarine.app

Octarine is a private, markdown-based note-taking application for Mac, Windows, and Linux (with iOS in TestFlight) that focuses on speed, simplicity, and data ownership. Notes are stored as plain markdown files on the user's device, with offline-first architecture and no cloud lock-in. It includes a WYSIWYG markdown editor, daily/weekly notes, templates, search, and optional AI-assisted writing and chat-with-notes features using a user-provided API key or local LLM.

What it's for

Personal knowledge management (PKM)Daily journaling and note-takingWriting drafts and articlesResearch notes and documentationQuick idea captureMeeting notes and basic task tracking

Features 20

Ask Octarine: chat with your notes using local embeddings
Command Bar for keyboard-driven navigation
Cross-platform desktop app (Mac, Windows, Linux)
Custom filtered views
Daily Desk for journaling and quick capture
Export to txt, pdf, html, docx
Fast performance tested with 100k+ word documents
Full text search across notes
Graph View of note connections
Markdown editing with rich text support (TipTap editor)
Offline-first architecture with local file storage
Pinned notes and folders
Skills: reusable logic for Ask Octarine and Writing Assistant
Standalone markdown file editor (open files without adding to a workspace)
Task migration between days
Templates for reusable note structures
Video annotation with timestamped notes
Weekly AI recap
Writing Assistant for rewrite/summary/outline generation
YAML frontmatter properties for metadata

At a glance

free tier

TypeDesktop app

DeploymentInstalled (local)

PlatformsmacOS, Windows, Linux, iOS

ForWriters and knowledge workers seeking simplicity, Privacy-conscious users tired of surveillance-based apps, People overwhelmed by feature-bloated PKM tools, Users wanting to avoid subscription fatigue, Users who value speed and performance over extensive plugins

CompanyOctarine

Integrations

GitDropboxOneDriveiCloudSyncthingChatGPT

Resources

Pricing

Pro plan costs $79 as a one-time purchase (no subscription), granting lifetime access and free future updates. Prices are stated in USD and may be subject to taxes. AI features require bringing your own API key or a local LLM. Team pricing is available by contacting the vendor but no figure is stated.

PersonalFree

Free plan, downloadable directly.

Fewer themes (4) and paper types (1); lacks Pro-only features such as multiple AI providers, Writing Assistant, Ask Octarine, custom filtered views, and email support

ProQuote

$79 one-time purchase, not a subscription; free lifetime updates. Team pricing available on request (quote-based, not listed).

License key usable on 3 devices simultaneously; unlimited deactivations