You sit down at your Linux machine, open a note-taking app, and watch it stall for four seconds before the cursor blinks. Four seconds. That's the moment most people start hunting for an alternative — and that hunt almost always ends in the open source corner of the internet, where a dozen projects are quietly competing for your attention.
The problem is that most roundups just list apps. They don't tell you which one survives a 3,000-note vault, which one syncs without eating your battery, and which one installs cleanly on Fedora without a fight. That's what this piece does. It's about the best open source note-taking apps for Linux, judged on things that actually matter to someone using Linux every day: package availability, Wayland behaviour, sync reliability, and how much RAM the thing eats with a real vault open.
Key Takeaways
- Joplin remains the safest default for most Linux users: native packages on every major distro, encrypted sync, and a web clipper that works.
- Obsidian is not open source — a distinction worth knowing before you commit years of notes to it.
- Flatpak and AppImage builds have become the norm; native repo packages are increasingly rare outside Debian and Arch.
- Handwriting support on Linux is the weakest link: no mainstream app handles a stylus well, and Xournal++ is the honest exception.
- Sync is where open source note apps break down, not where they shine — you will likely run your own or accept a paid tier.
The best open source note-taking apps for Linux, judged on how they actually run
Before the list, the method. I tested each app on two machines: a ThinkPad with Fedora and Wayland, and an older Dell running Debian with X11. Vault size was identical — roughly 3,000 notes, most of them plain text with a handful of images and PDFs attached. I measured cold start time, RAM at idle with that vault loaded, and how the sync behaved when I edited a file on one machine and pulled it on the other five seconds later.
That last test matters more than any feature list. Sync is the thing that makes or breaks a note system, and it's the area where open source tools are most honest about their limits.
Joplin: the one you can install anywhere
Joplin is the answer to "best open source note-taking apps for Linux" for a boring, excellent reason: it runs on everything. There's a Flatpak, an AppImage, a Snap, and packages in the Debian and Arch repositories. On Fedora I used the AppImage because it was the least friction, and it launched in about 1.8 seconds with the full vault open.
Sync is Joplin's real strength. You can point it at NextCloud, a WebDAV share, Dropbox, OneDrive, or pay for Joplin Cloud. End-to-end encryption is built in and enabled by a single toggle. The catch? Sync is chunked and encrypted, which means a large initial upload takes a while — my first sync of 3,000 notes took close to twenty minutes on a decent connection. After that, incremental syncs were near-instant.
Markdown editing is solid, the web clipper is genuinely useful, and the plugin ecosystem has grown to the point where you can add a decent calendar view or a backlink panel. What it doesn't do well: the mobile experience is clunky, and the interface still looks like a 2018 Electron app. Neither of those stopped me from using it for two years.
Logseq: for people who think in outlines
Logseq works differently from everything else here. Every note is a bullet point, and every bullet can be a page. It's built around daily journals rather than folders, and if that structure clicks with you, it clicks hard. Local-first, Markdown files on disk, and a query system that can surface every mention of a topic across your whole vault.
The downside is a steep learning curve and an app that has spent a long stretch in beta. I'll be blunt: I tried Logseq twice before it stuck, and the second attempt only worked because I stopped trying to impose folder structure on it. RAM usage with my vault sat around 480 MB, which is heavier than Joplin's ~200 MB.
Obsidian: excellent, but not open source
This one needs saying clearly because it appears in every Linux note-taking list, including open source ones. Obsidian is proprietary freeware. The app is closed source. Your notes are plain Markdown files you own, and the plugin ecosystem is the best in the category, but the software itself is not open.
If open source is a hard requirement for you — for reasons of auditability, longevity, or licensing — Obsidian doesn't qualify. If you care more about local files and a working plugin system than about the licence, it's arguably the most capable option on Linux. I use it for project notes and I'm comfortable admitting the contradiction.
Standard Notes and Notesnook: the encryption-first pair
Both apps lead with privacy, and both are open source. Standard Notes has been around the longest and has a minimal, almost austere editor — which some people love. Notesnook is newer, has a richer editor with formatting toolbar and attachments, and is closing the gap fast.
Where they differ from Joplin: sync is their own service or self-hosted, not a generic WebDAV share. That's cleaner to set up and worse if you already have a NextCloud instance you want to reuse. Standard Notes' free tier is genuinely usable; Notesnook's is more restrictive.
Xournal++: the honest answer for handwriting
Stylus support on Linux is a mess, and I'll say so plainly. Most Markdown apps treat a pen input as a mouse. Xournal++ doesn't — it's built around handwritten PDF annotation and freehand drawing, and it handles pressure sensitivity properly if your tablet is recognised by the kernel (Wacom devices generally are; generic ones vary).
It's not a note-organiser. There's no sync, no database, no backlinks. It's a pen-and-paper replacement, and on a convertible laptop with a decent digitizer it's the closest Linux gets to OneNote's ink experience.
How the main options compare on the things that matter
Feature lists are everywhere. What's rarely shown side by side is install friction, resource cost, and sync options. Here's the comparison I'd want to see before committing.
| App | Licence | Install on Linux | RAM (3k-note vault) | Sync options |
|---|---|---|---|---|
| Joplin | Open source (AGPL) | Flatpak, AppImage, Snap, repo | ~200 MB | WebDAV, NextCloud, Dropbox, Joplin Cloud |
| Logseq | Open source (AGPL) | AppImage, Flatpak | ~480 MB | Git, iCloud, custom file sync |
| Obsidian | Proprietary | AppImage, Flatpak, deb, rpm | ~350 MB | Obsidian Sync (paid), any file sync |
| Standard Notes | Open source (AGPL) | AppImage, Snap, web | ~180 MB | Own service, self-host |
| Notesnook | Open source (GPL) | AppImage, Snap, deb | ~220 MB | Own service, self-host |
| Xournal++ | Open source (GPL) | Flatpak, repo on most distros | ~120 MB | None built in |
Two numbers stand out. First, the RAM spread is nearly four-fold — on a 4 GB laptop that difference is felt. Second, native repository packages are becoming scarce: three of these six ship primarily as Flatpak or AppImage, which means manual updates unless your distro handles them.
The questions people actually ask before switching
Most of the confusion around Linux note apps comes from comparing them to tools that occupy a different category entirely. Four questions come up again and again, and they deserve direct answers rather than hedged ones.
Which is better, Joplin or Notion?
They solve different problems, so "better" depends entirely on what you need the tool for. Joplin is a local-first note store: your files live on your disk, sync is optional and encrypted, and there's no account required. Notion is a hosted workspace — databases, collaborative pages, project boards — that only works while you're online and signed in.
If you want your notes to survive a company shutting down, pick Joplin. If you need relational databases and shared team pages, Notion wins, and no open source app matches it on that front yet. Many people I know run both: Joplin for private notes, Notion for team work.
Does Linux have a Notepad app?
Yes, several, and most distros ship one by default. GNOME has gedit (now Text Editor in recent versions), KDE ships Kate, and lighter desktops often include Mousepad or Leafpad. There's also Notepadqq, which is deliberately modelled on Notepad++ and handles large files well.
All of these are plain text editors rather than note organisers — no tags, no search across a vault, no sync. If that's all you need, they're already installed. If you're outgrowing them, that's when Joplin or Logseq starts making sense.
What is a good handwriting notes app for Linux?
Xournal++ is the strongest answer for pen input, and it's the one I'd recommend without hesitation for annotating PDFs or taking freehand notes on a tablet PC. It's in the repositories of Debian, Ubuntu, Fedora and Arch, and the Flatpak is current. Pressure sensitivity works out of the box with Wacom hardware.
For handwriting recognition rather than just ink capture, the picture is thinner. There's no Linux equivalent of OneNote's handwriting-to-text conversion that works reliably. You can capture ink in Xournal++ and, if you need searchable text, that usually means a separate OCR step.
What app is replacing OneNote?
For most Linux users leaving OneNote, Joplin is the practical replacement — same hierarchical notebooks, attachments, tagging, and sync, with the added benefit of Markdown files you can read without the app. The migration path is the awkward part: OneNote exports to PDF or its own format, and getting clean Markdown out of it takes an intermediate step.
If your OneNote use was heavily ink-based, there's no true replacement on Linux. Xournal++ covers the handwriting, but you lose the notebook structure and cross-device sync that OneNote provided.
What nobody tells you about open source note-taking on Linux
The installation step is where most of these apps quietly fall apart, and it's rarely discussed in roundups. Here's what I hit in practice.
- Flatpak builds sometimes sandbox file access in ways that break vaults stored outside your home directory — I lost an hour to a sync folder on a mounted drive that Joplin's Flatpak simply couldn't see.
- AppImage files don't integrate with your desktop menu unless you install a helper like AppImageLauncher, and even then updates are manual.
- Wayland and HiDPI: Joplin and Logseq both render correctly now, but blurry text on fractional scaling was a real problem as recently as last year on some setups.
- Database-backed apps (Joplin) and file-backed apps (Logseq, Obsidian) behave very differently when your disk fills up — the file-backed ones tend to fail more gracefully.
- Snap versions lag behind releases by weeks in several cases, which matters if you're waiting on a sync bug fix.
None of this is disqualifying. But knowing it in advance saves the kind of afternoon I spent wondering why a vault wouldn't load, only to discover it was a permission issue inside a sandbox.
So which one should you actually install?
If you want one recommendation and no hedging: install Joplin. It's open source, it installs cleanly everywhere, its sync works with infrastructure you probably already have, and its files remain readable if the project ever disappears. That last point is the one I keep coming back to — the whole reason to choose open source notes is longevity, and Joplin's plain-Markdown-plus-database approach survives the app.
Pick Logseq if you think in outlines and don't mind the beta rough edges. Choose Obsidian if you're willing to trade the open source licence for the best plugin ecosystem available, and be honest with yourself about that trade. Reach for Xournal++ the moment a stylus enters the picture.
The uncomfortable truth about this whole category: the app matters less than the format your notes are stored in. Every tool here except one writes plain files you can read in a terminal. That's the real insurance policy — not the software you pick in 2026, but whether you can still open your notes in 2036 when half these projects have gone quiet. Choose accordingly.
