The best free alternative to Obsidian is Logseq, which is also Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Obsidian and loads of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to Obsidian are Zettlr, Joplin, Anytype and sNotes – Students Notes.
Local-first, privacy-focused notebook supporting Markdown and Emacs Org mode. Offers offline use, encrypted backups, plugin extensibility, LaTeX support, real-time collaboration, and hierarchical organization for personal knowledge management.
Unified writing platform offering note-taking, easy citations with Zotero integration, LaTeX/Word templates, snippets, themes, dark modes, code highlighting, multi-language support, and knowledge management with Zettelkasten for seamless writing from notes to books.
Open source app for managing notes and to-dos with Markdown support. Syncs seamlessly across devices using services like Dropbox and OneDrive. Offers end-to-end encrypted synchronicity, offline access, rich import/export options, and a Web Clipper for browsers.
Manage notes, tasks, and projects offline with Markdown support. Enjoy encrypted storage, P2P syncing, and powerful dynamic collections across all devices, while allowing redistribution and modification for non-commercial uses.
Students Notes is a note-taking app designed for online learners to overcome information overload, organization, and memorization challenges.
Enhance team collaboration and content organization with Notion. Experience real-time access, intuitive drag-and-drop functionalities, and visually simple interfaces designed for productivity in managing tasks, notes, and databases effectively. Ideal for teams of every size.
Offers open-source, end-to-end encrypted notes with device-based privacy, cross-platform support, private vault, secure sync, offline access, markdown editor, exports to multiple formats, automatic backups, organizational tools, and strong encryption.
Secure note-taking app with end-to-end encryption, unlimited syncing across all platforms, offline access, detailed organization through tags, strong passcode and biometric protections, and premium features like encrypted files, themes, web clipper, super note types, and hardware key support.
Comprehensive digital notebook offering organizers, shared notes, multi-device syncing, and optical character recognition, plus cloud-based data management for efficient information handling and accessibility.
Open-source workspace offering complete data control, deep customization via themes, plugins, and templates, native multi-platform support using Flutter and Rust, offline access, privacy features, collaborative tools, and easy extensibility for all users.
Google Keep is a multifunctional tool that merges note-taking with browsing, allowing capture of thoughts, checklists, or voice notes, with cross-device synchronization. Features include color-coded notes, voice transcription, geo-fencing, collaboration, cloud storage, and seamless Google integration.
Powerful online word processor with real-time collaboration, document conversion from Word, extensive formatting options, revision history, and multilingual capabilities, all integrated within the Google Drive ecosystem, accessible through any internet-connected device.
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Logseq is incredibly innovative and it respects my privacy and freedom by providing Free and open source software as opposed to proprietary tools.