Heptabase records 179,905 monthly visits with -5.8% month-over-month growth and Free Trial, Paid pricing. Whimsical records 966,895 monthly visits with -18.7% growth and Freemium pricing.
A visual knowledge base that turns scattered sources into a worldview you can build on
The collaborative whiteboard built for product builders
| Dimension / Metric | | |
|---|---|---|
| Official Domain | heptabase.com | whimsical.com |
| Pricing Model | Free Trial, Paid | Freemium |
| Monthly Visits | 179.91K (179,905) | 966.9K (966,895) |
| MoM Traffic Delta | -11K (-5.8%) | -222.85K (-18.7%) |
| Primary Market & Share | 🇹🇼 Taiwan (44.5%) | 🇮🇳 India (19%) |
| Direct Visits / mo | 97.77K | 602.36K |
| User Rating | 4.6 | 4.7 |
| 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.
The collaborative whiteboard built for product builders
AI Flowcharts, AI Mind Maps and AI Wireframes convert a short text prompt into structured, fully editable diagrams, branched mind maps, or web and mobile wireflows — no manual drawing required.
Boards host diagrams, flowcharts, mind maps, wireframes, embedded media and documents side by side, so a whole product narrative lives in a single shareable file.
Multiple teammates edit the same board simultaneously with live cursors, thread comments attached to specific objects, and mention-based notifications.
Drag-and-drop UI components let teams sketch screens, link them into clickable flows and iterate on product ideas before engineering commits to a build.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.
SpecialistMap the literature around the papers you love—free
SpecialistMap the literature around the papers you love—free
Free / Open-sourceCombines mind mapping and project workflows with AI agents, but less focused on pure visual diagramming and wireframes.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
SpecialistOrganizes notes into connected typed objects rather than visual whiteboards and infinite spatial canvases.
SpecialistOrganizes notes into connected typed objects rather than visual whiteboards and infinite spatial canvases.
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.
An offline-first visual note-taking app on an infinite canvas with built-in AI summarization tools.
An offline-first visual note-taking app on an infinite canvas with built-in AI summarization tools.
Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.
SpecialistInstantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
