Notion set a new standard for all-in-one workspaces. It combines notes, databases, wikis, and project management into a single, polished interface. But as teams and individuals grow more privacy-conscious, cracks in the proprietary model are starting to show. If you are looking for an alternative that keeps your data under your control, the open-source ecosystem has matured significantly. Here are seven open-source alternatives to Notion worth considering in 2026.
Why people are leaving Notion
Before jumping into the alternatives, it helps to understand what is driving the exodus. Notion is a great product, but it is not the right fit for everyone.
Privacy and data ownership. Notion stores your notes, documents, and databases on its own servers. While the company has a strong security track record, you do not own the infrastructure. For teams handling sensitive information, legal documents, or internal runbooks, trusting a third-party SaaS with every byte of institutional knowledge is a risk that is hard to justify.
Pricing pressure. Notion's free plan comes with tight limits on file uploads and team size. As teams scale, per-seat pricing adds up quickly. Startups, non-profits, and self-hosting enthusiasts often prefer predictable infrastructure costs over recurring SaaS bills.
Vendor lock-in. Notion's block-based format is powerful, but exporting your data into usable formats can be painful. If Notion changes its pricing, features, or terms, moving elsewhere is a major project.
Offline limitations. Notion is fundamentally cloud-first. While offline support has improved, many users still experience sync conflicts or slow load times without a stable connection.
The desire for customization. Notion's feature set is what Notion decides it is. Open-source alternatives let you modify the code, extend functionality with plugins, or integrate with your existing stack on your own terms.
At a glance: best open-source Notion alternatives
| Tool | Best For | License | Self-Hostable | Monetization |
|---|---|---|---|---|
| AFFiNE | All-in-one workspace (notes + whiteboard + database) | Proprietary* | Yes | Freemium |
| Docmost | Team wikis and collaborative documentation | AGPL-3.0 | Yes | Free |
| Joplin | Privacy-first personal note-taking | Proprietary* | Yes | Freemium |
| TriliumNext Notes | Hierarchical knowledge bases and scripting | AGPL-3.0 | Yes | Free |
| memos | Lightweight, privacy-focused note capture | MIT | Yes | Free |
| SilverBullet | Markdown power users and live queries | MIT | Yes | Free |
| Focalboard | Kanban boards and project management | AGPL-3.0 | Yes | Free |
* AFFiNE and Joplin are open-source but use custom or non-OSI-approved licenses. Check their repositories for the exact terms.
AFFiNE
AFFiNE is the closest visual match to Notion on this list. It combines a rich document editor, an infinite whiteboard, and database-style views into a single open-source workspace. Built with a local-first architecture using CRDTs, AFFiNE works offline by default and syncs when you are back online.
Key features include block-based editing, kanban views, markdown support, and an edgeless canvas mode for mind-mapping. You can self-host AFFiNE or use their managed cloud option. It is actively developed and targets knowledge workers who want Notion's flexibility without the lock-in.
- License: Open source (custom license)
- Self-hostable: Yes
- Best for: Teams that want an all-in-one workspace with visual collaboration
Explore AFFiNE on OpenAltFinder →
Docmost
Docmost is an open-source collaborative wiki and documentation platform explicitly built as an alternative to Confluence and Notion. It offers a clean, modern editor with real-time collaboration, nested pages, version history, and workspace permissions.
The editor supports inline comments, mentions, embeds, code blocks, and tables. If your team uses Notion primarily for internal documentation, wikis, or runbooks, Docmost provides a familiar experience without the per-user pricing. It is AGPL-licensed and deploys easily via Docker.
- License: AGPL-3.0
- Self-hostable: Yes
- Best for: Teams replacing Notion wikis and internal documentation
Explore Docmost on OpenAltFinder →
Joplin
Joplin is one of the most mature open-source note-taking apps available. It organizes notes into notebooks with tags, supports markdown editing, and offers end-to-end encryption. Where Joplin shines is its flexibility: you can sync via Joplin Cloud, Nextcloud, WebDAV, Dropbox, OneDrive, or your own server.
It is available on every major platform and includes a web clipper for saving articles directly from your browser. For individuals leaving Notion because of privacy concerns, Joplin's combination of encryption and self-hosted sync is hard to beat.
- License: Open source (custom license)
- Self-hostable: Yes
- Best for: Privacy-focused individuals who need cross-device sync
Explore Joplin on OpenAltFinder →
TriliumNext Notes
TriliumNext Notes is a community fork of the original Trilium Notes project. It is designed for building large, hierarchical knowledge bases with rich text editing, markdown, code blocks, diagrams, and relation maps. Notes live in a tree structure, but clones let a single note appear in multiple places.
A standout feature is its scripting API: you can write JavaScript automations that manipulate notes, create templates, or build custom workflows. TriliumNext also supports end-to-end encryption for sensitive notes and exports to standard formats. It is a strong choice for power users who outgrew simpler tools.
- License: AGPL-3.0
- Self-hostable: Yes
- Best for: Power users who want deep customization and scripting
Explore TriliumNext Notes on OpenAltFinder →
memos
memos is a modern, lightweight note-taking platform designed for privacy-conscious users. It stores notes as plain markdown and is built to be self-hosted with minimal overhead. The interface is clean and fast, focusing on quick capture and retrieval rather than complex formatting.
If you use Notion as a personal memo pad or lightweight journal and want something simpler that you fully control, memos is worth a look. It is MIT-licensed and deploys in seconds with Docker.
- License: MIT
- Self-hostable: Yes
- Best for: Lightweight, self-hosted personal note capture
Explore memos on OpenAltFinder →
SilverBullet
SilverBullet is a markdown-based personal knowledge management tool built for people who like to tinker. Every note is a plain markdown file, but SilverBullet extends them with a live query engine and template system that creates dynamic, database-like views.
Features include slash commands, a command palette, full-text search, backlinks, and a rich plugin ecosystem. It runs entirely in the browser for individual use or can be hosted on a server for multi-device access. If Notion's databases appeal to you but you want them built on open, plain-text files, SilverBullet is the tool to try.
- License: MIT
- Self-hostable: Yes
- Best for: Markdown power users who want programmable notes
Explore SilverBullet on OpenAltFinder →
Focalboard
Focalboard, created by the team behind Mattermost, is an open-source project management tool that competes directly with Trello, Asana, and Notion's database views. It supports kanban boards, tables, galleries, and calendars.
It comes in two flavors: a Personal Desktop app for individuals and a Personal Server for team collaboration. While standalone development has slowed, the project remains a solid choice for teams that want self-hosted task and project management without the complexity of a full wiki platform.
- License: AGPL-3.0
- Self-hostable: Yes
- Best for: Teams that used Notion primarily for project tracking and kanban boards
Explore Focalboard on OpenAltFinder →
Which Notion alternative should you choose?
The right tool depends on how you used Notion in the first place.
- If you want the closest visual and functional replacement, AFFiNE is your best bet.
- If you used Notion for team documentation and wikis, Docmost is purpose-built for that.
- If privacy and cross-platform sync are your top concerns, Joplin is the veteran choice.
- If you need a deeply customizable system for large knowledge bases, TriliumNext Notes is hard to beat.
- If you want something lightweight and dead simple, try memos.
- If you live in markdown and want live queries, SilverBullet is uniquely powerful.
- If project management and kanban boards were your main use case, Focalboard is a direct fit.
The good news is that all of these tools are open source and self-hostable. You can try them locally before committing, and your data stays yours. That alone is reason enough for many teams to make the switch.
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