Note-Taking Apps
Open-source note-taking apps
50 of the 147 note-taking apps in this directory are open source, according to their own sites.
All of them are free or have a free plan.
Listings checked up to Oct 9, 2026 · Where the facts come from
| Tool | Price | Free plan | Runs on |
|---|---|---|---|
| LogseqOpen-source outliner for linked notes stored as local files | Free plan · from $5/mo | Yes | Web, macOS, Windows, Linux, iOS, Android |
| ReflectOpen-source daily notes app with backlinks and local Markdown | Free plan · from $9.99/mo | Yes | macOS, iOS, Browser extension |
| JoplinOpen source Markdown notes with sync through a service you choose | Free plan · from €2.40/mo | Yes | Web, macOS, Windows, Linux, iOS, Android, Browser extension |
| SimplenoteFree plain-text notes that sync across every major platform | Free | Free | Web, macOS, Windows, Linux, iOS, Android |
| Standard NotesEnd-to-end encrypted notes app with open source clients | Free plan · from $90/yr | Yes | Web, macOS, Windows, Linux, iOS, Android, Browser extension |
| NotesnookOpen source, end-to-end encrypted notes on every platform | Free plan · from $1.99/mo | Yes | Web, macOS, Windows, Linux, iOS, Android, Browser extension |
| AppFlowyOpen-core workspace for docs, wikis and projects you can self-host | Free plan · from $6/mo | Yes | Web, macOS, Windows, Linux, iOS, Android |
| AFFiNEOpen-source workspace that merges docs, whiteboards and databases | Free plan · from $6.75/mo | Yes | Web, macOS, Windows, Linux, iOS, Android, Browser extension |
| Trilium NotesFree, open-source hierarchical notes for a personal knowledge base | Free | Free | Web, macOS, Windows, Linux, Browser extension |
| SiYuanOpen-source, local-first notes built on linked content blocks | Free plan · from $64 one-time | Yes | Web, macOS, Windows, Linux, iOS, Android, Browser extension |
| TiddlyWikiOpen-source personal wiki kept in a single HTML file | Free | Free | Web, macOS, Windows, Linux |
| Xournal++Open-source handwriting notes and PDF annotation for desktop | Free | Free | macOS, Windows, Linux |
| MemosOpen-source, self-hosted timeline of short Markdown notes | Free | Free | Web, Browser extension |
| TolariaFree, open-source desktop app for Markdown knowledge bases | Free | Free | macOS, Windows, Linux |
| FSNotesOpen-source Markdown notes app for Mac and iPhone | Free plan · from $4.99 one-time | Yes | macOS, iOS |
| Tangent NotesOpen-source Markdown notes app that maps the path between notes | Free | Free | macOS, Windows, Linux |
| Beaver NotesOpen-source, local-first Markdown notes app for desktop | Free | Free | macOS, Windows, Linux |
| CrypteeEncrypted documents, notes and photo storage from Estonia | Free plan · from €3/mo | Yes | Web |
| LockbookOpen-source encrypted notes app with Markdown and drawing | Free plan · from $2.99/mo | Yes | macOS, Windows, Linux, iOS, Android |
| Mimiri NotesEnd-to-end encrypted notes in a tree, with encrypted sharing | Free plan · from $1.20/mo | Yes | Web, macOS, Windows, Linux, iOS, Android |
| FUTO NotesLocal-first Markdown notes with self-hosted encrypted sync | Free | Free | macOS, Windows, Linux, iOS, Android |
| SaberOpen-source handwritten notes app for phones, tablets and PCs | Free plan · from $5/mo | Yes | macOS, Windows, Linux, iOS, Android |
| RnoteOpen-source app for sketching and handwritten notes with a stylus | Free | Free | macOS, Windows, Linux |
| Linwood ButterflyOpen-source handwriting and sketching app with an infinite canvas | Free | Free | Web, macOS, Windows, Linux, Android |
| Orgzly RevivedOrg mode outliner for notes and to-do lists on Android | Free | Free | Android |
| GitJournalMobile Markdown notes app that syncs through any Git repository | Free plan · from $1.99/mo | Yes | iOS, Android |
| MarkorOffline Android text editor for Markdown notes and todo.txt | Free | Free | Android |
| QuillpadOpen-source Android notes app with Markdown and task lists | Free | Free | Android |
| Fossify NotesOpen-source Android notes and checklists with no account | Free | Free | Android |
| NotallyXMinimal open-source Android app for notes and task lists | Free | Free | Android |
| MiaoYanNative Mac Markdown notes app with a split editor and preview | Free plan · from $14.99 one-time | Yes | macOS, iOS |
| VNoteFree desktop Markdown note-taking app with plain-file notebooks | Free | Free | macOS, Windows, Linux |
| NotenikFree Mac notes app with Markdown, custom fields and outlining | Free | Free | macOS |
| NoteGenOpen-source Markdown notes app that organizes captures with AI | Free | Free | macOS, Windows, Linux, iOS, Android, Browser extension |
| ZavalaFree open-source outliner for Mac, iPhone and iPad | Free | Free | macOS, iOS |
| Bangle.ioBrowser-based notes app that edits your local Markdown files | Free | Free | Web |
| BlinkoAI-assisted card notes, self-hosted or on Blinko Cloud | Free plan · from $5.99/mo | Yes | Web, macOS, Windows, Linux, Android |
| SilverBulletScriptable Markdown knowledge base, self-hosted or on desktop | Free plan · from $50/yr | Yes | Web, macOS, Windows, Linux |
| flatnotesSelf-hosted notes web app on a flat folder of Markdown files | Free | Free | Web |
| JottySelf-hosted notes and checklists stored as Markdown files | Free | Free | Web |
| NoteDiscoverySelf-hosted Markdown knowledge base that runs in the browser | Free | Free | Web |
| CherryTreeHierarchical desktop notes with rich text and code highlighting | Free | Free | macOS, Windows, Linux |
| QOwnNotesOpen-source Markdown notes app with Nextcloud and ownCloud support | Free | Free | macOS, Windows, Linux, Android, Browser extension |
| ZimDesktop wiki that keeps linked pages as plain text files | Free | Free | macOS, Windows, Linux |
| KeyNote NFOpen-source tabbed notebook for Windows with tree notes | Free | Free | Windows |
| TreeSheetsOpen-source hierarchical spreadsheet for free-form notes and data | Free | Free | macOS, Windows, Linux |
| Stylus Labs WriteOpen-source handwriting word processor for desktop and mobile | Free plan · from $8.99 one-time | Yes | macOS, Windows, Linux, iOS, Android |
| DeepNotesEnd-to-end encrypted infinite canvas for nested notes | Free plan · from $3.99/mo | Yes | Web, macOS, Windows, Linux |
| MarknoteKDE's rich text note-taking app that saves notes as Markdown files | Free | Free | macOS, Windows, Linux |
| MindForgerOpen-source Markdown notebook that links related notes for you | Free | Free | macOS, Windows, Linux |
Common questions
Which note-taking apps are open source?
50 of the 147 note-taking apps in this directory are open source, according to their own sites. They are Logseq, Reflect, Joplin, Simplenote, Standard Notes, Notesnook, AppFlowy, AFFiNE, Trilium Notes, SiYuan, TiddlyWiki, Xournal++, Memos, Tolaria, FSNotes and 35 more.
When was this checked?
Each listing shows its own date. On this page they run from Oct 4, 2026 to Oct 9, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.