The best open source alternative to Obsidian is Logseq. If that doesn't suit you, our users have ranked more than 100 alternatives to Obsidian and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Obsidian are Zettlr, Joplin, Notesnook and Standard Notes.
Workspace fusing browsing, file management, and AI with local-first data; offers note-taking, applet creation, offline media storage, YouTube and PDF interaction, customizable AI-powered notes, citation tools, split views, sidebar navigation, and privacy features.
Reor is an AI-powered desktop note-taking app: it automatically links related ideas, answers questions on your notes and provides semantic search. Everything is stored locally and you can edit your notes with an Obsidian-like markdown editor.
Offline-first, self-hostable note app supporting rich text formatting, tag-based organization, customizable backgrounds, pinning, search, archiving, admin management, trash recovery, mobile and web access, sync, privacy safeguards, and dark or light themes.
EasyNotes: Jetpack Compose MVVM for seamless note-taking. Effortless creation, editing, and organization.
Provides end-to-end encrypted note-taking, file storage, and sketching with syncing across platforms, zero data collection, no personal info or passwords required, open-source code for transparency, and optional premium storage, all via native and CLI tools.
Take notes on any website, organize notes for whole domains or specific pages, access all in a management page, use export, import, tagging, search, sticky-notes, auto-saving, and customizable keyboard shortcuts, all in a locally stored browser extension.
Secure device-synced notepad using AES-GCM-256 encryption to protect confidential data. Features include a tree-structure for note organization, historical changes tracking, and collaboration options. Supports all major platforms with cloud sync and offline access.
XWiki is the ultimate open-source structured wiki designed to enhance business collaboration and efficiency. Tailored for tech-savvy professionals, XWiki’s extensibility, customization, and flexibility make it indispensable for managing large projects and datasets, while...
acreom is an actionable personal knowledge base for developers. It helps developers ship faster by centralizing personal and team context in one place.
Tangent is designed to let you write the way you think. Your thoughts are connected; Tangent lets you link to existing notes and make new ones with ease.
Nicely designed tool that immediately works on top of your Obsidian folder structure. It supports much of the core functionality that makes Obsidian great but offers other innovative workflow possibilities
Tangent's feed view and context map system makes continuing off from a previous thread of thought really easy. Its writing focus modes help to remove all other distractions and just get thoughts onto the page.
BEST TOOL FOR LINUX NOTE TAKING!
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Obsidian is more of a personal knowledge-management tool, while XWiki is a more robust collaborative knowledge base useful for teams.