SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
Dia Browser records 1,254,172 monthly visits with +108.4% month-over-month growth and Free pricing. Goodnotes records 3,227,341 monthly visits with +10.8% growth and Freemium, Free Trial pricing.

The AI browser that reads between your tabs
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | diabrowser.com | goodnotes.com |
| Pricing Model | Free | Freemium, Free Trial |
| Monthly Visits | 1.25M (1,254,172) | 3.23M (3,227,341) |
| MoM Traffic Delta |
|---|
| +652.37K (+108.4%) |
| +314.75K (+10.8%) |
| Primary Market & Share | 🇺🇸 United States (29%) | 🇺🇸 United States (33.8%) |
|---|
| Direct Visits / mo | 740.36K | 1.64M |
|---|
| User Rating | 4.3 | 4.4 |
|---|
| Supported Platforms | Website | Website |
|---|

The AI browser that reads between your tabs
Starts the day with a consolidated view of your calendar, inbox and key links so you know what is coming before work begins.
Ask once and Dia searches open tabs along with connected Slack, Notion, Teams, GSuite and other tools to answer with full context.
Requests for a deck or a summary come back as presentable slides and shareable reports rather than raw chat text.
Surfaces where work is actually happening, like a specific pull request or spec draft, so one click lands you in the right place.

Handwritten notes, PDF markup, and AI study tools on one canvas
Low-latency ink with palm rejection, cross-out to erase, and handwriting-to-text conversion keeps writing close to pen on paper.
Import contracts, papers, or textbooks and mark them up by hand, with searchable annotations and clean exports.
Search across typed text, handwriting, and sketches, and turn notes into summaries, mind maps, or structured plans.
Work together in shared notebooks, documents, and whiteboards simultaneously, without version conflicts or file ping-pong.
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.

SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
#2
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
#3SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.

Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.

Free / Open-sourceProvides an open-source desktop AI workforce for browser and terminal tasks, though less polished as a daily web browser.


Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.

Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.

Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.
SpecialistOperates as a browser extension rather than a dedicated AI browser, excelling at page summarization and writing.

Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.
SpecialistExcels at automatically generating flashcards and practice quizzes from study notes, but lacks freehand drawing features.
SpecialistTurns course materials into interactive AI study tools, but focuses less on handwritten digital notebooks.
SpecialistStronger online PDF editing and AI chat capabilities, but lacks tablet-optimized handwritten note-taking workflows.
SpecialistConverts notes and PDFs into quizzes and flashcards, but lacks stylus-based handwriting and sketching tools.
Provides gorgeous structured block-based document editing, but is built for typed text rather than handwritten notes.
Organizes notes into interconnected typed objects rather than traditional notebooks, but lacks handwritten ink support.
Combines local LLMs with web automation inside a private browser, though lacking Dia's native workspace integration.
SpecialistUses an infinite visual canvas for note organization, but lacks Goodnotes' paper templates and PDF annotation polish.
Offers spatial whiteboards for organizing complex research, but lacks Goodnotes' freehand handwriting stylus support.
SpecialistOperates as a browser extension rather than a dedicated AI browser, excelling at page summarization and writing.
Integrates multi-model AI assistants for research automation, though with a different interface and navigation paradigm.