
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Noteey: An offline-first visual note-taking app on an infinite canvas with built-in AI summarization tools. Heptabase records 179,905 monthly visits with -5.8% month-over-month growth and Free Trial, Paid pricing. Noteey records 230,694 monthly visits with -1.6% growth and Freemium pricing.

A visual knowledge base that turns scattered sources into a worldview you can build on
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | heptabase.com | noteey.com |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 179.91K (179,905) | 230.69K (230,694) |
| MoM Traffic Delta | -11K (-5.8%) | -3.64K (-1.6%) |
| Primary Market & Share | 🇹🇼 Taiwan (44.5%) | 🇰🇷 South Korea (27.8%) |
| Direct Visits / mo | 97.77K | 36.85K |
| User Rating | 4.6 | 4.2 |
| Supported Platforms | Website | Website |

A visual knowledge base that turns scattered sources into a worldview you can build on
Split PDFs, web pages, YouTube videos, podcasts and Readwise or Zotero items into cards and read deeper through every citation.
Turn any goal into a personalised course and process readings with AI help before arranging ideas on the board.
Give your knowledge a structure that can be reworked as you learn, using nested tags and properties rather than flat folders.
Query your knowledge base from Claude Code, ChatGPT, Codex or Grok Bot through the plugin, MCP server and CLI.
Offline visual note-taking on an infinite canvas
Text, images, sticky notes, web links, PDFs, mind maps, videos and sketches all live on one unbounded surface, stored locally and available without internet.
Search and annotate PDFs, then pull highlights onto the canvas as cards. Take timestamped notes on video and audio and revisit them anytime.
Built-in tools summarize YouTube videos, PDFs, PowerPoint and Word files, plus generate transcripts and notes from video content.
Turn canvas items into database-style cards with properties, then organize and re-view the same knowledge in several ways.

SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
SpecialistOpenAI's flagship multimodal assistant powered by GPT-6 and GPT-5.6 for reasoning, coding, and deep research.
Delivers advanced collaborative infinite canvas tools and AI diagramming, but is cloud-dependent rather than offline-first.
Delivers advanced collaborative infinite canvas tools and AI diagramming, but is cloud-dependent rather than offline-first.
SpecialistUnlimited AI transcription of audio and video in 98+ languages
SpecialistUnlimited AI transcription of audio and video in 98+ languages

SpecialistAn AI agent that summarizes, transcribes, and turns your ideas into slides, docs, and media
SpecialistAn AI agent that summarizes, transcribes, and turns your ideas into slides, docs, and media

SpecialistExcels at handwritten digital notebooking and PDF markup with AI search, but lacks spatial card mapping.
SpecialistExcels at handwritten digital notebooking and PDF markup with AI search, but lacks spatial card mapping.

SpecialistThe collaborative whiteboard built for product builders

SpecialistMap the literature around the papers you love—free
SpecialistMap the literature around the papers you love—free
SpecialistCombines beautifully formatted documents and AI writing assistants, but lacks spatial infinite canvas note organization.
SpecialistCombines beautifully formatted documents and AI writing assistants, but lacks spatial infinite canvas note organization.

SpecialistOrganizes notes into connected typed objects for structured knowledge, but lacks an infinite spatial canvas.
SpecialistOrganizes notes into connected typed objects for structured knowledge, but lacks an infinite spatial canvas.

Pairs a spatial visual canvas with multi-model chat agents, offering a more agentic research experience than Heptabase.
Pairs a spatial visual canvas with multi-model chat agents, offering a more agentic research experience than Heptabase.
Combines an infinite canvas workspace with an integrated AI assistant to organize projects and generate boards.
Combines an infinite canvas workspace with an integrated AI assistant to organize projects and generate boards.

SpecialistTransforms diverse study materials like PDFs and videos directly into interactive concept maps and flashcards.
SpecialistTransforms diverse study materials like PDFs and videos directly into interactive concept maps and flashcards.