Open-source note-taking apps

Your notes are some of the most personal data you own. These open-source apps keep them in formats you control, so you can switch tools without losing years of writing.

Note-taking software tends to become the place where everything ends up: meeting minutes, recipes, research, half-finished ideas and to-do lists. That is exactly why the choice matters. A proprietary service can change its pricing, shut down, or make exporting difficult, and suddenly your archive is stuck. Open-source apps reduce that risk because the code is public, the file formats are documented, and the community can keep a project alive even if the original authors move on.

Three different approaches

The apps in this category solve the same problem in very different ways, so it helps to know which style suits you before installing anything.

• Notebook-style apps organise notes into notebooks and tags, much like a traditional notes app. They are the easiest to get started with and work well for people coming from mainstream note services.
• Outliners treat every line as a block that can be nested, linked and referenced elsewhere. They shine for daily journaling and connecting ideas, but take some time to get used to.
• Hierarchical knowledge bases arrange notes in a deep tree and add features such as attributes, scripting and relation maps. They suit people who want to build a long-term personal wiki.

What to look for

Storage and export. Check whether notes are stored as plain Markdown files or inside a database, and how easy it is to export everything. Plain files are easier to back up and edit with other tools; a database can enable richer features.

Sync. Some apps sync through services you already use, such as WebDAV or cloud drives; others offer their own server that you host yourself. If you need your notes on a phone, confirm that a mobile app exists and that sync is reliable.

Encryption. If your notes travel through a third-party server, end-to-end encryption means that server cannot read them.

Apps in this category

Quick recommendation

If you just want a reliable replacement for a mainstream notes app, start with Joplin. If you like daily notes and linking ideas together, try Logseq. If you plan to build a large, structured personal wiki and do not mind a learning curve, Trilium Notes is worth a look.

Frequently asked questions

Can I move my notes from a closed notes app?

Usually yes. Most mainstream note services can export notes as Markdown, HTML or their own export format, and the apps above can import at least one of these. Expect to tidy up some formatting after a large import.

Do I need a server to sync between devices?

Not always. Some apps sync through storage you already have, such as a cloud drive or WebDAV account. Others work best with a small server you run yourself, which gives you full control over where your data lives.