Linear notes are great for writing a letter. They fall apart when you are trying to solve a complex problem.
I have seen this happen with clients building AI agents. They spend weeks writing prompts in a notebook, only to realize they have lost the context of why they built the agent in the first place. The connections between their research, their constraints, and their final goal get buried in a long list of bullet points.
That is why I treat these tools as an “External Cortex.” They are not just digital notebooks. They are the infrastructure you need to manage the context files and build workflows without getting lost.
If you are trying to move from linear thinking to spatial thinking, here is the short version.
The Quick Verdict
Heptabase is the best overall tool for researchers and teams who need to organize complex information visually. It strikes the right balance between structure and flexibility. Scrintal is a strong runner-up if you prefer a more freeform, whiteboard-first approach. TheBrain is the pick for individuals who need lightning-fast navigation through massive amounts of personal data.
For most people starting their AI workflows, Heptabase is the safest bet. It has the features to grow with you as you move from simple notes to building agents.
How I Tested These Tools
I have tested Heptabase, Scrintal, Infinity Maps, and TheBrain. I have not used Atlas, Kumu, or Miro personally for this specific category, so I am relying on research and community feedback for those.
My goal was to see which tool could handle the “AI Workflows” stage of the AI Fluency Levels framework. At this stage, you are not just taking notes. You are connecting ideas, managing context, and building systems.
A tool that fails here usually does so because it becomes too cluttered or too rigid. You need a system where you can see the whole picture while drilling down into the details.
Tool Breakdown
Heptabase
Heptabase is the tool I have tested most deeply in this category. It feels like a visual whiteboard that knows how to organize itself.
What it does
It connects your notes on a visual board. You can nest boards inside other boards, which is huge for complex projects. It also has a built-in database for tags and to-dos.
Pricing
The Pro plan is $8.99 per month billed annually. The month-to-month rate is higher.
What I like
The nested board feature is a game changer. I was working on a project for a client where we needed to track a weekly executive summary system. The challenge was that the schedule changed frequently. We needed a one-page overview with daily breakdowns.
With Heptabase, we could put the master plan on one board, then create a separate board for each day that linked back to the main view. Everything flowed together on a single page so the executive could see at a glance what was happening.
The AI integrations are also strong. They help you summarize notes and find connections you might have missed. It feels like the tool is actually helping you think, not just storing your thoughts.
What I don’t like
It can get slow if you have hundreds of cards on a single whiteboard. The performance dips when the board gets too big.
The tag system can also become overwhelming if you are not careful. I found that having too many tags made it harder to find things, not easier.
Best for
Researchers, students, and enterprise teams who need to organize complex information visually. It is perfect for people who want structure but still need the freedom to connect ideas in any direction.
Scrintal
Scrintal is a strong competitor to Heptbase. It feels a bit more like a traditional whiteboard with some graph features added in.
What it does
It combines mind mapping and note-taking. You can create unlimited docs and boards and collaborate in real-time.
Pricing
Personal is $5/month, Pro is $9/month billed annually, and Team is $10/user/month.
What I like
The interface is clean and distraction-free. It is excellent for visual learners who want to brainstorm without getting bogged down in rigid structures.
I found it very easy to use on a tablet. If you are someone who likes to draw and sketch while you think, this is a great option.
What I don’t like
It can feel a bit clunky for highly structured research. If you need to manage a lot of specific data points, Heptbase feels more robust.
The feature set can also feel like too much for simple use cases. If you just want to write a list, this might be overkill.
Best for
Visual thinkers, students, and teams who need a flexible tool for brainstorming and idea mapping. It is ideal for users who prefer a freeform approach.
Infinity Maps
Infinity Maps focuses on the concept of an infinitely zoomable canvas.
What it does
It acts like a digital post-it wall where you can zoom in and out indefinitely. You can connect cards with arrows and paste screenshots directly into them.
Pricing
It starts at $9 per month with a free tier available. Custom pricing exists for teams.
What I like
The concept of infinite zoom is powerful for strategic planning. I realized that most strategic planning fails because people lack a framework. They are either flying by gut feeling or paralyzed by too many options.
Infinity Maps helps you see the whole strategy from a high level, then zoom in to the specific details. It creates a living system where you can define your goals and track your metrics.
What I don’t like
It can be slow at times. The free tier is also less extensive than some competitors.
Best for
Teams and individuals who need a visual canvas for strategic planning and complex thought structuring.
TheBrain
TheBrain is a veteran in this space. It describes itself as “mind mapping on steroids.”
What it does
It creates a visual knowledge graph where you connect topics. It has fast performance in version 14 and includes AI for brainstorming.
Pricing
Pricing varies by edition. The Pro Combo plan is around $299 per user per year. There are also monthly options starting around $16 per seat.
What I like
The performance is lightning-fast. I have seen it handle large datasets without lagging. It is intuitive for organizing thoughts and information.
What I don’t like
I have not used this personally, so I cannot speak to the day-to-day workflow. Some users report that the team collaboration features are less detailed than individual plans.
Best for
Individuals and professionals seeking a visual, non-linear approach to knowledge management.
Other Mentions: Atlas, Kumu, Miro
I have not used these personally for this specific use case.
Atlas is known for its advanced graph capabilities but can be complex to set up. Kumu is great for network analysis but feels more like a data tool than a note-taking app. Miro is a standard whiteboard tool that has added some graph features, but it is not primarily designed for knowledge management.
Pricing Comparison
| Tool | Starting Price | Free Tier | Best Value |
|---|---|---|---|
| Heptabase | $8.99/mo (billed annually) | Yes | Pro plan for researchers |
| Scrintal | $5/mo (Personal) | Yes | Pro at $9/mo annual |
| Infinity Maps | $9/mo | Yes | Free trial no card |
| TheBrain | $16/seat/mo or $299/yr | Yes | Perpetual license option |
| Atlas | Varies | Yes | Advanced graph users |
| Kumu | Varies | Yes | Network analysts |
| Miro | $8/mo billed annually ($10 monthly) | Yes | Teams needing whiteboards |
Who Should Pick Which Tool?
Pick Heptabase if:
You are a researcher or student who needs to organize complex information. You want a tool that helps you connect ideas and manage context for AI workflows.
Pick Scrintal if:
You are a visual thinker who likes to brainstorm freely. You need a clean, distraction-free interface for idea mapping.
Pick Infinity Maps if:
You are a strategist or team leader who needs to see the big picture. You want an infinitely zoomable canvas for planning.
Pick TheBrain if:
You are an individual who needs fast navigation through large amounts of personal data. You value speed and simplicity over complex collaboration features.
FAQ
Do these tools work on mobile?
Most of them do, but the experience varies. Heptabase and Scrintal have mobile apps, but the full power is often on the desktop. Infinity Maps and TheBrain also have mobile options.
Can I export my data?
Yes, most of these tools allow you to export your data in standard formats like Markdown or CSV. This is important for future-proofing your knowledge.
Are these tools good for teams?
Heptabase and Scrintal are great for teams. They offer real-time collaboration features. TheBrain is more focused on individual use, though it has some team features.
Do I need to know how to code?
No. These tools are designed for non-technical users. You do not need to know how to code to use them effectively.
Which tool is best for building AI agents?
Heptabase is the best fit for this. Its ability to manage context and connect ideas makes it ideal for building the infrastructure needed for AI agents.\
Final Recommendation
If you are building AI workflows or managing complex research, start with Heptabase. It offers the best balance of visual thinking and structured organization. The nested boards and AI features make it a strong foundation for the “AI Workflows” stage of fluency.
Scrintal is a great alternative if you prefer a more fluid, whiteboard-like experience.
The key is to stop thinking about these as just note-taking apps. They are the infrastructure for your thinking. They allow you to see the connections that linear notes hide.
And if you are ready to take your AI fluency to the next level, check out my AI Workshop to learn how to build agents and automate your workflows.
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