6 best open-source note-taking apps for Windows

There are plenty of note-taking apps available for every kind of user, whether you’re a student or a professional. Some apps are even tailored to specific professions. For example, developers might prefer Obsidian, while those who simply want to jot down notes may opt for Apple Notes or Google Keep. However, most popular note-taking apps are closed-source, which can make some users hesitant to trust them with their personal information. Below, we’ve listed six open-source note-taking apps that prioritize privacy.

6

Logseq

Graph-based knowledge management

Logseq takes a different approach to note-taking by focusing on networked thought and bidirectional linking. Instead of traditional linear notes, it uses a graph-based structure where ideas connect through backlinks. Pages and individual bullet points, called blocks, form the foundation of the app.

It supports both Markdown and Org-mode, and its daily journals make it easy to capture quick thoughts. Unlike most note-taking apps that rely on cloud storage, Logseq follows a local-first approach. All your notes are stored as plain text files directly on your device.

While the learning curve is steeper than with traditional apps, Logseq’s flexibility makes it a great choice for complex projects like academic research or brainstorming sessions. Plugins expand its capabilities, adding features like task management and Kanban boards.

5

Standard Notes

Encrypted, minimalist notes with cross-platform sync

Standard Notes will keep things simple and secure for you. It provides a distraction-free space for users who prioritize privacy. All notes are encrypted end-to-end by default, and since the code is open-source and audited, transparency is a key focus.

The app syncs smoothly across Windows, macOS, mobile, and web. The free version covers the basics with text formatting and tagging, while a subscription unlocks extras like rich text and code editors, themes, and extended revision history.

One cool addition is its built-in spreadsheet feature. It’s not meant to replace Excel or Google Sheets, but it offers enough functionality to be surprisingly useful. Standard Notes also includes a theming engine that lets you customize the entire look and feel of the app.

4

Simplenote

It stays true to its name

Owned by Automattic (the company behind WordPress), Simplenote stays true to its name with a fast, no-frills interface for those who prefer speed over complexity. Notes sync instantly across devices, and the search function includes tagging and pinning for easy organization.

While Markdown support is available, formatting options are intentionally minimal to keep things simple. Simplenote has apps for almost every platform, plus a web app for when you’re on the go, and the experience feels the same no matter where you use it. Syncing is seamless, and you can also collaborate on notes with others. One standout feature is the built-in option to publish a note, turning it into a shareable link.

3

Notesnook

Privacy-first notes with end-to-end encryption

Notesnook positions itself as a privacy-first alternative to mainstream apps, combining end-to-end encryption with a user-friendly interface. Notes can be organized into notebooks or tagged, and a powerful search function scans content, attachments, or even OCR text in images.

The editor supports Markdown, rich text, and multimedia embeds, balancing simplicity with functionality. A focus on privacy extends to zero tracking or third-party integrations, with data encrypted locally before syncing to the cloud. A subscription unlocks advanced features like infinite notebooks, automatic backup, version history, and priority support, but the free tier is enough for most users.

2

Anytype

Modular, local-first workspace

Anytype isn’t just another open-source note-taking app – it’s a full-fledged alternative with a block editor, rich databases, and a solid template library. Instead of sticking to traditional note-taking, it takes a modular, object-oriented approach, blending notes, tasks, and databases into one flexible workspace.

The app is designed to work offline first, with all your data stored locally. If you want to sync across devices, you can opt for encrypted peer-to-peer syncing. Anytype lets you create “objects,” which are basically customizable blocks for notes, projects, or media that you can link together dynamically. Templates make it easy to set up workflows for things like journaling, goal tracking, or study guides.

The interface is highly customizable, allowing drag-and-drop tweaks to match your style. Anytype has native apps for macOS (both x64 and Arm), Windows, Linux, iOS, and Android. There’s also a web clipper available on the Chrome Web Store.

1

Joplin

Encrypted notes with Markdown support

If you’re looking for an open-source note-taking app with a familiar, easy-to-use interface, Joplin is a solid choice. It keeps things simple while offering end-to-end encryption and cross-platform sync. Plus, if you want full control over your data, you can even self-host it.

Joplin is built with Markdown support, so you can format your notes while still keeping them readable in plain text. You can organize notes into notebooks, add tags for quick access, and find what you need fast with keyword search.

One of Joplin’s best features is its web clipper, which lets you save articles, screenshots, and PDFs straight from your browser. It also works offline and supports plugins, so you can customize it with things like table editors, calendar integrations, or new themes. The interface is functional but leans more on the utilitarian side, so it might not feel as polished as something like Evernote.

Take notes without worrying about privacy

Open-source note-taking apps offer more transparency about how they handle your data compared to closed-source options. Plus, you can always inspect the code to see exactly what’s happening behind the scenes. If you’re looking for more open-source apps, check out our list of 20 options for Windows. And, while you’re at it, take a look at these free apps that help you manage and sync your notes across devices.

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