OpenNotas

Simple lightweight open-source note-taking with encrypted sync

About OpenNotas

OpenNotas is a simple, lightweight personal note-taking application that runs as a cross-platform progressive web app on phones and computers, online or offline. Notes are encrypted with AES before they reach the sync server, so the service never holds readable content, and the whole app is free and open source.

OpenNotas website preview

Live preview of opennotas.io via the WordPress mShots service — it can take a few seconds to generate on a first visit.

OpenNotas: strengths & things to check

Strengths

Completely free to use — this directory lists no paid plan for it.
Covers notes, open source, encrypted, pwa — see the focus areas listed in its key facts.
Has 6 close alternatives in the same category on this page, so switching or comparing is easy.

Things to check

Free tools can change their model or shut down — avoid locking critical work into it without an export path.
Current plan prices are not listed here (they change too often to print reliably) — confirm the exact price on the official site.
It is one of 2328 tools in the Productivity & Notes category here — compare it against the alternatives below before you commit.

Derived from this listing's own data (pricing model, focus areas and category) — not a hands-on review score.

OpenNotas pricing

Pricing model	Free — listed in this directory as a free tool, with no paid plan required to use it.
Free access	Yes — fully free
Current plan prices	Listed on the official site — prices change, so this directory links out instead of printing a number that may already be stale.
Official site	opennotas.io

OpenNotas key facts

Category: Productivity & Notes
Pricing: Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas: notes, open source, encrypted, pwa
Official site: opennotas.io

OpenNotas FAQ

How much does OpenNotas cost?

Free — listed in this directory as a free tool, with no paid plan required to use it. Current plans and prices are listed on the official site (opennotas.io).

What is OpenNotas used for?

Simple lightweight open-source note-taking with encrypted sync Its focus areas in the Productivity & Notes category: notes, open source, encrypted, pwa.

Where can I try OpenNotas?

On its official site, opennotas.io — the Visit Official Site button above goes straight there.

OpenNotas vs alternatives

	OpenNotas	AFFiNE	AppFlowy	Blinko
Pricing	Free — listed in this directory as a free tool, with no paid plan required to use it.	Freemium — a free tier lets you start, and paid plans are available if you need more.	Free — listed in this directory as a free tool, with no paid plan required to use it.	Free — listed in this directory as a free tool, with no paid plan required to use it.
Focus areas	notes, open source, encrypted, pwa	notes, open source, canvas, workspace	notes, open source, self hosted, workspace	notes, capture, open source
Official site	opennotas.io	affine.pro	appflowy.io	blinkonote.com
Directory status	Listed	Listed	Listed	Listed

Side-by-side from each listing's own directory data. Full alternative cards are below.

About the Productivity & Notes category

Notes, tasks, and project tools that keep you organized and focused. The Productivity & Notes category on Tools Hub currently lists 2328 tools. Alongside OpenNotas, it includes Plainva, CintaNotes, Noto.md, Yaranga.

FreeProductivity & Notesnotesopen-sourceencryptedpwa

Alternatives to OpenNotas

Tools in the same Productivity & Notes category that share focus areas with OpenNotas — worth comparing before you commit:

Productivity & Notes

AFFiNE

Open-source workspace merging docs, canvas and tables

Freemiumnotesopen-sourcecanvasworkspace

Productivity & Notes

AppFlowy

Open-source workspace you can self-host

Freenotesopen-sourceself-hostedworkspace

Productivity & Notes

Blinko

Open-source note-taking app focused on fast capture of fleeting ideas with

Freenotescaptureopen-source

Productivity & Notes

Blinko

AI notes and personal blogging for capturing ideas fast

Freemiumnotesaiself-hostedopen-source

Productivity & Notes

DeepNotes

Open-source infinite-canvas notes with deep nesting and encryption

Freemiuminfinite-canvasnotesopen-sourceencryption

Productivity & Notes

Feather Wiki

A tiny tool for simple, self-contained wikis in a single file.

Freewikinotessingle-fileopen-source

More in Productivity & Notes

Comparing tools in the Productivity & Notes category? These related listings are worth a look: Plainva — Local-first Markdown vault editor with databases over plain notes; CintaNotes — Portable Windows notes app for clipping and tagging information; Noto.md — Markdown-first notes app across web, desktop and mobile, local-first.