Overview
Sea is a calm note-taking app for clear thinking. It provides a focused place to write without distractions while keeping notes private, local, and under the user’s control.
Instead of requiring folders or a complicated organizational system, Sea lets people write first and organize later with tags. Related ideas can be connected directly through note links, while fast search makes notes, tags, and lists easy to find from one place.
Key Features
- Local-First Privacy: The note library stays on the user’s computer rather than depending on a cloud account.
- Markdown Writing: A natural Markdown editor supports structured, portable writing without adding interface clutter.
- Flexible Organization: Tags with automatically selected icons and direct note links make growing collections easier to navigate without rigid folder hierarchies.
- Lock Notes: Sensitive writing and attachments can be protected, with Windows Hello available for quick access on supported Windows devices.
- Protected Attachments: Images and documents remain protected inside Sea and can be exported when needed.
- Search, Import, and Export: Unified search helps users quickly rediscover ideas, while import and export tools keep their writing accessible and portable.
- Personalized Workspace: Multiple themes, editor preferences, feature settings, and keymaps let users shape a comfortable writing environment.
Product Architecture
- Platforms: Windows and Linux desktop applications
- Storage Model: Private, local-first note library
- Writing Format: Markdown
- Organization: Tags, automatic tag icons, note links, lists, and unified search
- Data Portability: Import support for common note formats plus note and attachment exports




