draw.io VS Opal

Compare draw.io VS Opal and see what are their differences

Rating: 0 reviews
Pricing: Open source

Rating: 0 reviews
Pricing: Freemium Free trial $27 / Monthly (Core Essentials, 1,000 items, 5 GB storage, 25MB file uploads)

Monitask

Employee Monitoring Software with Screenshots, Internet, Activity and Time Tracking sponsored

Note: These products don't have any matching categories. If you think this is a mistake, please edit the details of one of the products and suggest appropriate categories.

Which is more popular?

Based on our record, draw.io seems to be more popular. It has been mentioned 716 times since March 2021.

social mentions: 716 vs 0
Diagrams popularity: 100% vs 0%
alternatives listed: 240+ vs 14

Base details

Website, pricing, platforms and company facts side by side.

	draw.io	Opal
Website	drawio.com	opalrecall.com
Pricing	Open source	Freemium Free trial $27 / Monthly (Core Essentials, 1,000 items, 5 GB storage, 25MB file uploads) Official pricing
Company	Startup from Germany	Startup from the United States · 1 - 9 employees · 2025
Listed in	Diagrams Flowcharts Flow Charts And Diagrams Wireframing +1	Knowledge Management Note Taking Productivity Knowledge Base Document Management Document Management System Task Management Todos Project Management Notes +7

About draw.io and Opal

In their own words, as submitted to SaaSHub.

draw.io

Opal

No description of draw.io yet.

You remember where things are, not just what they're called. Manage your notes, documents, and important files on a visual, infinite canvas. Organize your draggable content spatially on a digital desk where everything remains visible, what's important stays top of mind, and whatever you need in...

Features and specs

What each product offers, as listed by its team.

draw.io 7 features

Opal 14 features

Free
draw.io offers a free version with extensive features, making it accessible to individuals and small teams without requiring financial investment.
User-Friendly Interface
The platform provides an intuitive drag-and-drop interface that is easy to use for both beginners and advanced users.
Collaboration
It supports real-time collaboration, allowing multiple users to work on the same diagram simultaneously.
Integrations
It integrates seamlessly with popular cloud storage services like Google Drive, OneDrive, and Dropbox, facilitating easy sharing and saving.
Versatility
Draw.io supports various diagram types including flowcharts, UML diagrams, network diagrams, and more, catering to a wide range of use cases.
No Installation Required
As a web-based tool, draw.io does not require any installation, making it accessible from any device with an internet connection.
Customizability
Users can customize shapes, styles, and templates to fit their specific needs, enhancing the utility of the tool.

Possible disadvantages

Performance Issues
Users may experience lag or performance issues, especially when working with very large diagrams or on less powerful hardware.
Limited Advanced Features
While suitable for most general uses, draw.io might lack some advanced features available in premium diagramming tools like Visio.
Cloud Dependency
As a cloud-based tool, draw.io requires a stable internet connection for optimal performance, potentially limiting its use in areas with poor connectivity.
Privacy Concerns
Using a cloud service can raise privacy concerns, especially when dealing with sensitive or proprietary information.
Learning Curve
Although user-friendly, becoming proficient with all features and integrations can take some time for new users.

Spatial Knowledge Management
Store your notes & documents, drag them around, and zoom and pan an infinite canvas, like a big desk, so you can see everything in context
Block Editor for Docs & Notes
Author content in a WYSIWYG block editor with markdown under the hood and copy-paste & drag and drop support for images, media, and files.
Internal Item Links
Build your knowledge base, cross-reference standard operating procedures (SOPs), or just connect ideas with clickable internal links that open your other docs & notes
Binders
Stack similar and repeating content in binders or use them to archive old content to keep your workspaces clutter-free
Fences
Spatially organize projects and similar content in draggable, resizable fences that provide unique work zones for different projects
Open Multiple Items
It's much easier to make comparisons, cross-reference information, and get a clearer picture of your work when you can see it all at once and drag and drop content from one open item to another.
Sharing
Share content with anyone, configure 4 levels of permissions (view, edit, share, delete shares), and collaborate in real-time on notes and documents
Opal API with AI Agent Skill
Programmatically manage your Opal content through the API or give your AI agents view or full access to create and manage content for you
AI Transcription Integration with CRUSH
Connect your [CrushTheMemory.com](http://CrushTheMemory.com) device to store your recordings and transcriptions as Opal notes or documents and map your CRUSH folders to fences, binders, and/or workspaces
Drag and Drop Files
Store PDFs, images, video, documents, or any file as File item types on your workspaces or as rich media embedded in notes and documents
Export Content
Export your content as HTML, markdown, or PDF
Publish to the Web
Publish content as external web pages for anyone to view without an Opal account
Bookmarks & iFrames
Bookmark links (that you can take notes on) and embed iframe content (like Google Docs) to view and edit while in Opal
Zero Nonsense Task List
Set the date (or default to "today") and create 10 tasks on the same day in seconds with zero clicks, sorted stalest first, that connect to your notes & docs. One-click dismissal.

Analysis

An editorial look at what each product does well and who it suits.

draw.io

Opal

Overall verdict

Yes, draw.io is widely regarded as a good tool for creating diagrams due to its versatility, ease of use, and comprehensive feature set. It is a reliable choice for both individual users and teams requiring collaborative diagramming capabilities.

Why this product is good

Draw.io is considered a good tool because it is user-friendly, offers a wide range of features for creating diagrams, and is available as both a web-based application and a desktop app. It supports multiple platforms and a variety of diagram types, including flowcharts, network diagrams, UML, and more. The tool is often praised for its intuitive interface, easy integration with platforms like Google Drive and Microsoft OneDrive, and the fact that it offers a free version without significant limitations.

Recommended for

Business professionals who need to create process flows and organizational charts.
Software developers and engineers designing network architecture, UML diagrams, or system designs.
Students and educators preparing educational materials or collaborative projects.
Project managers and teams who need to outline project workflows and timelines.

Overall verdict

Opal (opalrecall.com) is a solid choice for individuals and teams looking for a privacy-focused, AI-powered tool to capture, organize, and recall information such as meeting notes, screen activity, or personal knowledge, though it may still be maturing compared to more established competitors.

Why this product is good

Combines AI search with personal knowledge management to help users quickly retrieve past information
Offers privacy-conscious design, appealing to users cautious about data security
Simplifies capturing screen activity, notes, or meeting content in an organized, searchable format
Actively developed with a focus on productivity and reducing time spent searching for information
Provides a clean, user-friendly interface suited for both individuals and small teams

Recommended for

Professionals who need to quickly recall meeting details or research
Teams looking for lightweight knowledge management tools
Individuals concerned about data privacy in AI-driven apps
Remote workers who rely on digital notes and screen captures for productivity
Users seeking an alternative to bulkier enterprise knowledge management systems

Videos

Walkthroughs and reviews on video.

draw.io 6 videos + Add

Opal 4 videos + Add

draw.io - Draw diagrams in the cloud or as an AppImage

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100

draw.io

Opal

100% 100%

0% 0%

100% 100%

0% 0%

100% 100%

Questions & Answers

As answered by people managing draw.io and Opal.

What makes your product unique?

Opal's answer:

All your content is on a visual, infinite canvas desk. Notes, documents, files, etc. are draggable icons that you can organize spatially because we remember WHERE things are, not just what they're called. Opal keeps your work in sight so your brain never drops it.

Why should a person choose your product over its competitors?

Opal's answer:

When content is spatially organized, you stop losing content buried under folders, hierarchies, categories, and menus. Your brain begins to fire differently, sparking new ideas and spotting links, patterns, and opportunities it used to miss. - You connect ideas across clients, projects, and ideas - You Stay In Flow, No Context Lost, And No Rhythm Broken - You make faster, sharper decisions because every note and project is visible at once - You reuse your best work instead of rebuilding it from scratch - You eliminate the need for text-based searches and can find things even if you can't remember what you named them

How would you describe the primary audience of your product?

Opal's answer:

Solopreneurs, freelancers, people juggling multiple clients, visual thinkers, neurodivergent thinkers, and people who've quit productivity apps.

What's the story behind your product?

Opal's answer:

Something was lost when everything went digital. Having used various tools for years, I eventually discovered a fatal flaw that nearly all knowledge management tools suffer from: their attepts to organize content became the means by which content got buried. Over time as more content gets added, it became harder to find things, especially when you can't remember what you called it.

We remember things in physical space because we see them all the time and register their existence subconsciously, even if we don't need them in the moment. For example, if you asked where my keys were, I could tell you instantly. This spatial reasoning and thinking effect is severely hindered in the digital space.

After enough frustration, I decided to do something about it: build a spatial knowledge management tool that lets you see everything all at once. As you pan and zoom around your workspace, you are registering the existence of things even when you don't need them in that moment. That changes everything over time. Organizing becomes less about categorization, labeling, or hierarchy, and more about placement and "where I left it". Your brain remembers where far more easily than what. This is why I built Opal.

Which are the primary technologies used for building your product?

Opal's answer:

Web-based application built on NodeJS, Express, Form.io (MongoDB), and JavaScript.

User comments

Share your experience with using draw.io and Opal. For example, how are they different and which one is better?

Reviews and articles

External articles and on-site reviews we used to compare the two products.

draw.io no reviews yet

Opal no reviews yet

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We have no reviews of Opal yet. Be the first one to post

Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

draw.io 716 mentions

Opal 0 mentions

Creating Diagrams and Databases with Online Tools
Draw.io (available at drawio.com) is an online and offline tool that lets you create various types of diagrams, including:. - Source: dev.to / over 1 year ago
Random VS Code finds
During my college days I used to use Drawio to draw wireframes and flowcharts. When I found that there is a VS Code extension that allows me to do it in the IDE it was a no brainer. I have found it is also useful whenever I am screen... - Source: dev.to / almost 2 years ago
Reactor controller
Glad you like it! :D Feel free to reuse/edit it for the Steam page if you want. Also happy to send you the draw.io file if you'd like :). Source: over 3 years ago

Tracking Opal since Apr 2026.

Alternatives to draw.io and Opal

When comparing draw.io and Opal, you can also consider the following products.

LucidChart
LucidChart is the missing link in online productivity suites. LucidChart allows users to create, collaborate on, and publish attractive flowcharts and other diagrams from a web browser.

Compare LucidChart to draw.io or Opal:

LucidChart vs draw.io LucidChart vs Opal
Notion
All-in-one workspace. One tool for your whole team. Write, plan, and get organized.

Compare Notion to draw.io or Opal:

Notion vs draw.io Notion vs Opal
yEd
yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.

Compare yEd to draw.io or Opal:

yEd vs draw.io yEd vs Opal
Google Docs
Create a new document and edit with others at the same time -- from your computer, phone or tablet. Get stuff done with or without an internet connection. Use Docs to edit Word files. Free from Google.

Compare Google Docs to draw.io or Opal:

Google Docs vs draw.io Google Docs vs Opal
OmniGraffle
OmniGraffle is for creating precise graphics like website wireframes, an electrical system designs, or mapping out software class.

Compare OmniGraffle to draw.io or Opal:

OmniGraffle vs draw.io OmniGraffle vs Opal
Miro
Join Millions of users that collaborate from all over the planet using Miro. Experience the power of the #1 visual workspace for innovation. More than 100M users and 250,000 companies are collaborating on the canvas.

Compare Miro to draw.io or Opal:

Miro vs draw.io Miro vs Opal