Notion vs Obsidian: Which Note App? (2026)

TL;DR

• Choose Notion when you want a cloud all-in-one workspace for teams, databases, and AI. Choose Obsidian when you want a private, local-first markdown notebook you fully own.
• Notion is free for personal use, then $10 per member per month for Plus and $20 for Business, which bundles its AI agent.
• Obsidian is free forever for personal use with no sign-up, and you only pay for optional add-ons: Sync at $4 per month or Publish at $8 per month.
• Notion stores your data in the cloud and shines at collaboration; Obsidian stores plain markdown files on your device and shines at privacy and longevity.
• Many people use both: Notion for shared team work and Obsidian as a private second brain, because the two apps solve different problems.

What's Inside This Guide

• Quick Verdict: Notion vs Obsidian
• What Is Notion?
• What Is Obsidian?
• Notion vs Obsidian: Head-to-Head
• Pricing Compared
• Privacy and Data Ownership: Cloud vs Local
• Performance and Quality
• When to Choose Notion
• When to Choose Obsidian
• What I Like and What Falls Short
• How I Use Notion and Obsidian
• Frequently Asked Questions
• The Verdict: Notion or Obsidian in 2026?

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Quick Verdict: Notion vs Obsidian

Choose Notion when you want one cloud workspace where a team can write, plan, and run databases together, with AI built in. Choose Obsidian when you want a private notebook stored as plain files on your own device that you control completely. The core difference is simple: Notion is a cloud all-in-one workspace, Obsidian is a local-first markdown knowledge base.

They are built on opposite philosophies. Notion keeps everything in its cloud so that teams can collaborate in real time and so its AI can reach across your pages, your connected apps, and the web (Notion, 2026). Obsidian keeps everything as markdown files on your hard drive, which the company says makes your notes private, offline-capable, and impossible for anyone, including Obsidian itself, to read (Obsidian, 2026).

For most people the honest answer depends on one question: do you mainly work with other people, or mainly with yourself? Notion was designed for shared work, Obsidian for private thinking. Each wins its own jobs cleanly, and the rest of this guide is the detail behind that split.

If you only have ten seconds: pick Notion if you need a collaborative workspace with databases and AI, and pick Obsidian if you want a fast, private, future-proof note vault you own. Everything below is the pricing, privacy, and feature detail so you can be certain which one fits.

What Is Notion?

Notion is a cloud-based all-in-one workspace. It combines documents, wikis, databases, and project management in one app, with an AI agent that can act across your pages and connected tools. It is built for individuals and teams who want one place to write, organize, and run work together.

Notion started as a flexible notes-and-docs tool and grew into a full workspace platform. Its core building block is the database, which lets you organize hundreds or thousands of items, such as projects, tasks, or contacts, with custom properties, subtasks, dependencies, and multiple views (Notion, 2026). On top of that sit documents, wikis, forms, and lightweight websites.

The scale behind it is large. Notion passed 100 million users in 2026 and reports more than 4 million paying customers, with 80% of users located outside the United States (Notion, 2026). According to the company, 75% of Fortune 500 organizations now use Notion in some form.

AI is now central to the product. The Business plan includes Notion Agent, which the company describes as completing complex, multi-step tasks using context from your Notion workspace, your connected apps like Slack and Gmail, and the web (Notion, 2026). There are also AI Meeting Notes and Enterprise Search that reach across connected tools.

The mental model that helps most is to think of Notion as a shared operating system for a team. You go beyond taking notes in it; you build the structures your team works inside, then let everyone collaborate on the same pages in real time. That framing explains both its strengths and its limits. It is excellent when work is collaborative and structured, and heavier than it needs to be when all you want is a quick private place to think.

What Is Obsidian?

Obsidian is a local-first markdown knowledge base. It stores your notes as plain text files on your own device, links them together into a connected graph, and extends through a large library of community plugins. It is built for writers, researchers, and anyone who wants a private, future-proof second brain they fully own.

Obsidian works on a different principle from cloud apps. Every note is a markdown file saved in a folder, called a vault, on your computer. The company is explicit that your data stays on your device and is inaccessible to them, which is the foundation of its privacy promise (Obsidian, 2026). Because the files are open markdown, you are never locked in and can read them in any text editor.

The standout feature is linking. You connect notes with internal links, and Obsidian builds a graph view that shows how your ideas relate, which suits the "second brain" and Zettelkasten methods that knowledge workers favour. Backlinks let you see every note that references the one you are reading.

Extensibility is the other half of the story. Obsidian has more than 4,500 community plugins and over 550 themes, so you can reshape it into a task manager, a journal, a writing studio, or almost anything else (Obsidian, 2026). The core app is free with no sign-up and no limits, which is rare for a tool this capable.

The useful mental model here is a private workshop rather than a shared office. You build it to fit your own way of thinking, you own every file, and it keeps working offline and far into the future because the format is plain text. The trade-off is that real-time team collaboration is not its focus, so for shared, structured work it asks more of you than a cloud workspace does.

Notion vs Obsidian: Head-to-Head

Notion wins on collaboration, databases, and built-in AI; Obsidian wins on privacy, speed, ownership, and offline use. Here is how the two compare across the features that decide most choices.

The pattern is clear. If a row is about working with other people or structuring data, Notion leads. If a row is about privacy, ownership, speed, or working alone, Obsidian leads.

Two rows decide most real choices: collaboration and data ownership. Notion's real-time, cloud-based collaboration is what makes it a team workspace rather than a notes app, and that is hard to replicate in a local tool. Obsidian's local markdown files are what make it private and future-proof, and that is hard to replicate in a cloud tool. Weigh those two rows against how you actually work and the decision usually makes itself.

It is worth being honest about the overlap too. Notion can be used as a solo notebook and Obsidian can sync across devices and even publish to the web, so each can do a little of the other's job. The question is never whether a tool can do something, but whether it does it well enough that you would not reach for the other. On that test, the split above holds up in daily use.

Pricing Compared

Both tools are free to start, but they charge in completely different ways. Notion charges per member for richer plans, while Obsidian keeps the full app free and only charges for optional add-on services. All figures below are from each company's official pricing, verified at publication.

According to Notion, the Free plan covers personal use, Plus is $10 per member per month for small teams, and Business is $20 per member per month and bundles Notion Agent and AI Meeting Notes (Notion, 2026). Enterprise is custom-priced and adds advanced security, audit logs, and zero data retention with its AI providers.

Obsidian's pricing is the opposite shape. The app itself is free forever with no limits, and you only pay for optional services: Sync to keep notes encrypted and synced across devices, billed at $4 per user per month annually or $5 monthly, and Publish to put notes online, billed at $8 per site per month annually or $10 monthly (Obsidian, 2026). There is also a one-time $25 Catalyst license for early access, and a $50 per user per year Commercial license that is encouraged but not required for work use.

Which plan should you choose? If you want a free personal note vault and nothing else, Obsidian is the cheaper path because the core app costs nothing and never expires. If you want AI built in, pick Notion Business at $20 per member per month, since that is where Notion Agent lives. For a collaborating team, Notion's per-member pricing buys real-time shared workspaces that Obsidian does not offer natively. For a solo writer who wants their notes encrypted across a laptop and phone, Obsidian's free app plus $4 per month Sync is the most economical setup available.

The free tiers matter more than people expect. Obsidian's free plan is the complete app with all 4,500-plus plugins, not a stripped trial, and Notion's free plan is generous enough to run a personal life or a small project. That means the real question is rarely "which paid plan do I buy" but "does my work need cloud collaboration and AI, or private ownership and zero cost." Answer that and the bill follows.

Privacy and Data Ownership: Cloud vs Local

Obsidian gives you full local ownership of your data; Notion stores your data in its cloud. This is the single biggest difference between the two apps, and for many people it decides the choice on its own.

Obsidian stores every note as a plain markdown file on your device, which means the company cannot read your notes and you can open them in any editor without Obsidian installed (Obsidian, 2026). Your vault works offline, survives the company shutting down, and is never locked into a proprietary format. For privacy-conscious users, lawyers, journalists, or anyone storing sensitive thinking, that local-first design is the safest model available.

Notion stores your content on its servers, which is what makes real-time collaboration and cross-workspace AI possible in the first place. The trade-off is that your data lives in someone else's cloud. Notion does let you export to markdown and HTML, and on the Enterprise plan its AI providers use zero data retention, but the default home for your content is Notion's infrastructure, not your hard drive (Notion, 2026).

The table below shows how the two models compare on the dimensions that matter for privacy and longevity.

The practical takeaway is about what you value. If you want your data to outlive any single company and never leave your control, Obsidian's local files are the answer. If you accept cloud storage in exchange for collaboration and AI that can see across your whole workspace, Notion's model is the reasonable trade. Neither is wrong; they serve different priorities, and being clear about yours makes the choice obvious.

Performance and Quality

Obsidian is faster and lighter because it runs locally on plain text; Notion is more capable but heavier because it loads from the cloud. Each reflects what it was built to do.

Obsidian's speed advantage comes from its design. Because notes are local markdown files, opening, searching, and linking them is near-instant even with thousands of notes, and there is no network round-trip to wait on. For users with large vaults and a habit of jumping between notes, that responsiveness is a genuine daily benefit that a cloud app struggles to match.

Notion's quality advantage is breadth and structure. Its databases, relations, and views let you model real workflows that go far beyond note-taking, and its AI can act on that structured data. The cost is weight: complex pages and large databases can feel slower to load than a local file, especially on a poor connection, because everything is served from the cloud.

Independent comparisons in 2026 consistently reach the same split: Notion for teams, databases, and all-in-one work (Zapier, 2026), Obsidian for private, fast, link-based knowledge work (G2, 2026). The feature lists change with every release, but the shape of the result has been stable.

The clearest way to see it is task by task. The table below shows which tool wins each common job, based on how each one is designed rather than on any single benchmark.

Two things stand out in that split. First, every "work with others or structure data" job goes to Notion, and every "private, fast, own-your-data" job goes to Obsidian. Second, there is no row where one tool is so far ahead that the other is unusable, which is exactly why so many people keep both.

The lock-in question deserves a closer look because it is the reason many people pick Obsidian. A cloud workspace is convenient until you want to leave, at which point you depend on its export quality and the format it gives you. Obsidian sidesteps this entirely: your notes are already plain files you control, so there is nothing to migrate and nothing to lose. Notion narrows the gap with markdown export, but exporting is a step you have to take, and the result is not always a perfect copy of the original structure.

Extensibility also shapes daily use. Obsidian's plugin ecosystem means power users can bend the app to almost any workflow, from spaced-repetition flashcards to Kanban boards, without waiting for the company to ship a feature. Notion is less open in that sense, but its connections to tools like Slack, Gmail, GitHub, and Asana cover the integrations most teams actually need. The difference is philosophical: Obsidian lets the community extend the app, while Notion extends itself toward the other tools your team already uses.

When to Choose Notion

Choose Notion when collaboration, databases, and built-in AI are your priority. It is the better tool for these scenarios, and it is the one I reach for whenever work is shared or structured. The common thread is that the value comes from people working together inside one connected system, which is exactly what a cloud workspace delivers and a local vault cannot.

For Teams and Small Businesses

Notion is the stronger choice when several people need to work in the same place. Real-time collaboration, shared databases, permissions, and a built-in AI agent make it a genuine workspace rather than a notes app. For a team running projects, docs, and wikis together, that shared structure is the whole point.

The advantage compounds as the team grows. Everyone edits the same pages, a project database stays the single source of truth, and Notion Agent can pull context from Slack, Gmail, and the web to do multi-step work (Notion, 2026). For an operator running a small company, having docs, tasks, and AI in one subscription removes the need to stitch several tools together, which is why 75% of Fortune 500 companies use Notion in some form.

For People Who Want AI Built In

Notion is the obvious pick if you want AI inside your notes rather than bolted on. Notion Agent, included on the Business plan, completes tasks using the context of your whole workspace and your connected apps, which a local markdown vault has no native equivalent for. For AI-first workflows, Notion leads clearly.

This matters most when your knowledge is scattered across tools. Because Notion's AI can search across connected apps and the web, it can answer questions and draft work using information you would otherwise hunt for manually. Obsidian can add AI through community plugins, but you assemble that yourself and the model does not see across a connected app stack. If you want capable AI working out of the box, Notion is the practical choice.

For Structured, Database-Driven Work

Notion is the right tool when your notes need to be a system rather than plain text. Its database engine handles projects, CRMs, content calendars, and trackers with custom properties, relations, and multiple views, which Obsidian only approximates through plugins. For anyone who thinks in tables and pipelines, Notion does far more of the job.

The gap is largest on relational work. Linking a tasks database to a projects database, filtering by assignee, and switching between board, table, and calendar views is native in Notion and effortful in Obsidian. If your work lives in structured records rather than free-form notes, Notion is the tool built for it, and trying to force that workflow into a markdown vault usually means fighting the app.

When to Choose Obsidian

Choose Obsidian when privacy, ownership, speed, and offline use matter most. Its local-first design makes it the better default for these scenarios, and it is the tool to reach for whenever the work is private, personal, or meant to last. The common thread is that you want full control of your own data without depending on anyone's cloud.

For Writers and Researchers

Obsidian is the stronger tool for serious, link-heavy thinking. Plain markdown files, internal links, backlinks, and the graph view make it ideal for building a connected body of knowledge, which is why it is a favourite for the Zettelkasten and second-brain methods. For research and long-form writing, that linked structure is a real edge.

The benefit shows up over time. As your vault grows, the links between notes turn a pile of documents into a web of connected ideas you can navigate and rediscover, and the local files stay fast no matter how many you have. A general workspace can store notes, but it is not built around the idea that the connections between notes are the point, which is exactly what Obsidian optimizes for.

For Privacy-Conscious Users

Obsidian is the clear choice when your notes must stay private. Because everything is stored locally as files the company cannot read, it is the safest option for sensitive thinking, client work, or anything you do not want sitting in a third-party cloud (Obsidian, 2026). For privacy, no cloud workspace can match a local vault.

This is the group that benefits most from the local-first model without compromise. A lawyer keeping case notes, a journalist protecting sources, or anyone storing personal reflection gets a tool that works offline and keeps their data on their own device by default. If you do add Sync, it is end-to-end encrypted, so even synced notes stay private. For users where confidentiality is non-negotiable, Obsidian is the responsible pick.

For People Who Want to Own Their Data

Obsidian is the right tool if long-term ownership matters to you. Your notes are open markdown files you control, so there is no lock-in and no risk of losing access if a company changes course. For anyone building a knowledge base meant to last decades, that durability is worth more than any single feature.

The value is easy to underrate until you need it. People who have lost work to a discontinued app or a painful export tend to choose Obsidian precisely because the files are already theirs in a format that will open in fifty years. Notion's markdown export softens this, but exporting is a step and a snapshot, while Obsidian's ownership is simply how it works every day. If future-proofing is a priority, the local file model is the safer foundation.

What I Like and What Falls Short

Both tools are excellent at what they are built for, and both have real limits. Here is the honest breakdown after using each one daily, with the genuine downsides included rather than glossed over.

Notion

• The most capable all-in-one workspace: docs, databases, wikis, tasks, and AI in one connected place.
• Real-time collaboration and shared databases make it a genuine team tool, used by 75% of Fortune 500 companies (Notion, 2026).
• Notion Agent brings useful AI directly into your workspace on the Business plan, with context across connected apps.
• Where it falls short: your data lives in Notion's cloud, complex pages can feel slow, and there is no full offline mode the way Obsidian has.

Obsidian

• Local markdown files give you full privacy, true offline use, and zero lock-in, with notes you own forever.
• The free app is the complete app, extended by more than 4,500 community plugins and 550 themes (Obsidian, 2026).
• It is fast and light even with thousands of notes, because nothing has to load from a server.
• Where it falls short: real-time team collaboration is not native, there is no built-in AI, and the plugin-driven setup asks more effort than a ready-made cloud workspace.

How I Use Notion and Obsidian

I use both, and I pick the one that matches the work rather than trying to force a single tool to do everything. Notion is my shared workspace for anything a team touches, and Obsidian is my private vault for thinking and writing, and keeping that division clear has made both faster because I am never wondering which one to open.

When I am collaborating, planning projects, or running a structured database that other people need to see, I use Notion. The real-time editing and database views mean the whole team works from one source of truth, and the built-in AI saves me from copying context between apps to get a draft or a summary.

When I am writing, researching, or storing anything private, I use Obsidian. The local markdown files load instantly, work on a plane with no connection, and stay mine no matter what happens to any company, which is exactly what I want from a long-term knowledge base.

A concrete example from a recent project: I ran the shared planning, task tracking, and team docs in Notion so everyone could collaborate, then drafted the actual long-form research in Obsidian, where the linked notes and offline speed suited deep work. I tested keeping everything in Notion for a week, and the private research felt exposed in the cloud and slower to navigate. I also tested running the team work in Obsidian, and the lack of real-time collaboration made it the wrong tool the moment a second person was involved.

The lesson I keep relearning is that these are complements, not substitutes. I have used both daily for long enough to trust the split: Notion for shared, structured, AI-assisted work, and Obsidian for private, fast, owned-forever thinking. Paying for one where it earns its keep and using the other's free tier is the setup that has worked best for me.

Frequently Asked Questions

These are the questions people ask most about Notion versus Obsidian, drawn from Google's People Also Ask results and community threads. Each answer stands on its own.

Is Notion better than Obsidian?

Neither is universally better; they win different jobs. Choose Notion when you need a collaborative cloud workspace with databases and AI. Choose Obsidian when you want a private, local-first markdown vault you fully own. For many people, using both, Notion for teamwork and Obsidian for private notes, beats picking just one.

What is the difference between Obsidian and Notion?

The core difference is where your notes live and how you work. Notion is a cloud all-in-one workspace built for teams, databases, and AI, storing data on its servers. Obsidian is a local-first app that keeps notes as plain markdown files on your device. Choose Notion for collaboration, choose Obsidian for privacy and ownership.

Why use Obsidian instead of Notion?

Use Obsidian when privacy, speed, offline access, and data ownership matter most. Your notes are plain files on your own device that no company can read, and they work without internet and never expire. Choose Obsidian when you want a private, future-proof second brain; choose Notion when you need cloud collaboration and built-in AI instead.

Why use Notion over Obsidian?

Use Notion when you work with other people or need structured databases and AI. Real-time collaboration, powerful databases, and the built-in Notion Agent make it a genuine team workspace. Choose Notion when work is shared and structured; choose Obsidian when work is private, personal, and you want to own every file on your own device.

Can Notion replace Obsidian?

For solo private note-taking, Notion can cover the basics, but it cannot fully replace Obsidian. Notion stores data in the cloud and lacks true offline use and local file ownership. Choose Notion if collaboration and AI matter more to you; choose Obsidian if local storage, privacy, and a future-proof markdown vault are what you actually need.

Does Obsidian have AI like Notion?

Obsidian has no built-in AI, while Notion includes Notion Agent on its Business plan. You can add AI to Obsidian through community plugins, but you assemble it yourself and it does not see across connected apps. Choose Notion when you want capable AI out of the box; choose Obsidian when you prefer adding only the AI you specifically want.

Is Obsidian harder than Notion?

Obsidian has a steeper learning curve for power features because plugins and local files require more setup. Notion is more approachable out of the box for databases and shared docs. Choose Notion if you want a ready-made workspace with little configuration; choose Obsidian if you are happy to invest setup time for privacy, speed, and full control over your notes.

Is Notion or Obsidian free?

Both have genuinely free tiers, but they differ. Notion is free for personal use with generous limits, then $10 per member per month for Plus. Obsidian's complete app is free forever with no sign-up, and you only pay for optional Sync or Publish. Choose Obsidian for the most powerful free option; choose Notion's free tier for cloud collaboration.

Will Obsidian be free forever?

The core Obsidian app is free with no limits and no sign-up, and the company commits to keeping it free for personal use. You only pay for optional add-on services like Sync at $4 per month or Publish at $8 per month. Choose Obsidian if a permanently free, fully owned note app matters; choose Notion if you want cloud features instead.

Is Notion or Obsidian better for students?

For private study notes, linked thinking, and a free forever app, Obsidian is the better fit. For group projects, shared databases, and AI help with coursework, Notion is stronger. Choose Obsidian when you want a personal second brain you own; choose Notion when you collaborate with classmates or want AI built into your study workspace.

Which is better for note-taking, Notion or Obsidian?

For fast, private, link-based note-taking, Obsidian is the better tool because of local markdown files and the graph view. For notes tied to databases, tasks, and team collaboration, Notion is stronger. Choose Obsidian when notes are personal and connected; choose Notion when notes need structure, sharing, or AI inside one workspace.

Can Obsidian sync across devices like Notion?

Yes, but it is a paid add-on rather than the default. Obsidian Sync, at $4 per month billed annually, keeps notes encrypted and synchronized across devices, while Notion syncs automatically through its cloud. Choose Notion for automatic cloud sync included by default; choose Obsidian with Sync when you want cross-device access plus end-to-end encryption and local ownership.

Is Notion good for building a second brain?

Notion can build a second brain, but Obsidian is the more popular choice for it. Obsidian's backlinks, graph view, and local files suit the linked, owned, long-term knowledge base the method calls for. Choose Obsidian when the second brain is private and meant to last; choose Notion when you want it shared with a team and connected to AI.

Do Notion and Obsidian work offline?

Obsidian works fully offline because notes are stored locally on your device. Notion has limited offline support since its content lives in the cloud and needs a connection to load reliably. Choose Obsidian when offline access is essential, such as travel or low-connectivity work; choose Notion when you are usually online and want cloud collaboration and AI.

Should I switch from Notion to Obsidian?

Switch to Obsidian if you increasingly want privacy, offline use, speed, and to own your data as plain files. Stay with Notion if you rely on collaboration, databases, or built-in AI. Choose Obsidian when control and longevity matter more than convenience; choose Notion when shared, structured, AI-assisted work is the core of what you do.

Can I use both Notion and Obsidian together?

Yes, and many people do. A common setup is running Notion for shared team work, databases, and AI, while keeping Obsidian as a private vault for personal notes and writing. Choose Notion for anything collaborative and structured; choose Obsidian for anything private and owned. Together they cover more jobs than either app does alone.

The Verdict: Notion or Obsidian in 2026?

There is no single winner, because these tools are built for opposite jobs. The right choice depends on whether you mainly work with others or mainly with yourself, so here is the recommendation by who you are. Read the one that matches you and ignore the rest, because the best note app is the one that fits your actual work, not the one with the longest feature list.

If You're a Complete Beginner

Start with Notion, then try Obsidian once you know what you need. Notion's ready-made templates and visual workspace make it the easier first tool to get value from, and its free plan covers a lot. Keep Obsidian in mind for when you want a private, offline notebook you own, but learning one tool well beats half-learning two, so get comfortable with Notion first.

If You're a Vibe Builder

Use both, and pay for the one you touch most. If you spend more time collaborating, tracking projects, and using AI, pay for Notion Business at $20 per member per month. If you spend more time writing privately and building a personal knowledge base, run Obsidian free and add Sync at $4 per month. Notice your real pattern over a month before locking in the paid choice.

If You're a Professional Developer

Use Obsidian for personal notes and Notion for team work. Obsidian's local markdown files, speed, and plugin ecosystem suit a developer's private knowledge base, and the plain-text format plays well with version control and your own tooling. Use Notion where a team needs shared docs, databases, and AI. If you want both private ownership and collaboration, running each in its lane is the cleanest setup.

My Honest Recommendation

If you can only pick one, choose the tool that matches your most common job: Notion if you mostly collaborate and need structure and AI, Obsidian if you mostly think alone and value privacy and ownership. Be honest about where your hours actually go rather than where you wish they went, because that is what the tool should serve.

But if you can run both, do it, because Notion as a shared workspace and Obsidian as a private vault cover a wider range of work than either does alone. Obsidian's free app costs nothing to keep around, so adding it alongside Notion is an easy call. Treat Notion as your team layer and Obsidian as your private layer, and you rarely hit a job that neither handles well. For a weekly breakdown of the best AI and productivity tools and comparisons like this, subscribe to the My AI Guide newsletter.

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Sources

• Notion Pricing: verified Notion plan prices (Free, Plus $10/member, Business $20/member, Enterprise custom) and what each tier includes.
• Obsidian Pricing: verified Obsidian's free app plus add-on prices (Sync $4/month, Publish $8/month, Catalyst $25 one-time, Commercial $50/user/year).
• Notion AI: the Notion Agent capabilities, AI Meeting Notes, and Enterprise Search bundled on the Business plan.
• Obsidian: the local-first design, private on-device storage, open markdown format, and linked-thinking positioning.
• Notion: 100 Million Users: the 100 million user milestone, 4 million-plus paying customers, and global user base.
• Obsidian Community Plugins: the 4,500-plus community plugins and 550-plus themes available for extending Obsidian.

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Related Tools

Notion: the cloud all-in-one workspace compared in this guide, rated 8.3 in our directory.

Obsidian: the local-first markdown knowledge base compared here, also rated 8.3 and a favourite for private second brains.

Coda: a close Notion alternative that blends documents and databases, worth a look if you want another all-in-one workspace.

Logseq: a local-first, open-source outliner often compared to Obsidian for private, linked note-taking.

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