Comet

Spec sheet

Product

Comet is a Markdown note-taking app designed for local capture, encrypted syncing, and decentralized publishing.Read 11 Oct 2026 · comet.md

Free plan

YesRead 20 Sep 2026 · comet.md

Integrations

The project README describes encrypted sync with Nostr and encrypted blob storage with Blossom.Read 11 Oct 2026 · github.com

Support

The site links to the project's GitHub repository and its X account.Read 11 Oct 2026 · comet.md

License

The site states Comet is open source under the MIT License.Read 11 Oct 2026 · comet.md

Accounts

The site says no email, password, account, or sign-up is required to start writing.Read 11 Oct 2026 · comet.md

Current features

The listed core note-taking features are a Markdown editor, notebooks, tags, full-text search, and an archive flow.Read 11 Oct 2026 · comet.md

Desktop platforms

The download links list macOS ARM, macOS Intel, and Linux AppImage, .deb, and .rpm builds.Read 11 Oct 2026 · comet.md

Downloads

The site links downloads for macOS ARM, macOS Intel, and Linux in AppImage, .deb, and .rpm formats.Read 11 Oct 2026 · comet.md

Encrypted sync

The site says note blobs are encrypted before upload, so the relay and Blossom server see ciphertext rather than content.Read 11 Oct 2026 · comet.md

Encryption

The site says note content is encrypted before sync uploads, so relay and Blossom servers see ciphertext rather than content.Read 11 Oct 2026 · comet.md

Local storage

Notes are stored locally in SQLite, and the site says no server is required to use the app.Read 11 Oct 2026 · comet.md

Markdown

Notes use Markdown, which the site describes as portable and exportable.Read 11 Oct 2026 · comet.md

Mobile

The roadmap describes a mobile experience as a future expansion.Read 11 Oct 2026 · comet.md

Note features

The site's current roadmap lists local notes, a Markdown editor, notebooks and tags, full-text search, and an archive flow as core note-taking features.Read 11 Oct 2026 · comet.md

Offline access

YesRead 20 Sep 2026 · comet.md

Open source

The site says Comet is open source under the MIT License.Read 11 Oct 2026 · comet.md

Publishing

The roadmap lists a simple publish flow to Nostr as a next step.Read 11 Oct 2026 · comet.md

Publishing and sync

The roadmap lists note-to-note linking, publishing to Nostr, and desktop-to-desktop sync as next steps.Read 11 Oct 2026 · comet.md

Roadmap limit

The site lists mobile experience and deeper sync across devices as future work.Read 11 Oct 2026 · comet.md

Security approach

The maker says notes begin on the user's device and are encrypted before leaving it during sync.Read 11 Oct 2026 · comet.md

Plans and prices

Every Comet plan and price →

Where Specifiction places it

• AI Note-Taking Apps#13 of 428.5
• Note-taking apps#144 of 2167.8