Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.

Antom records 2,337,988 monthly visits with +28.6% month-over-month growth and Contact for Pricing pricing. Whimsical records 966,895 monthly visits with -18.7% growth and Freemium pricing.

The collaborative whiteboard built for product builders
| Dimension / Metric | ![]() | ![]() |
|---|---|---|
| Official Domain | antom.com | whimsical.com |
| Pricing Model | Contact for Pricing | Freemium |
| Monthly Visits | 2.34M (2,337,988) | 966.9K (966,895) |
| MoM Traffic Delta |
| +520.54K (+28.6%) |
| -222.85K (-18.7%) |
| Primary Market & Share | 🇨🇳 China (25.9%) | 🇮🇳 India (19%) |
|---|
| Direct Visits / mo | 212.94K | 602.36K |
|---|
| User Rating | 4.2 | 4.7 |
|---|
| Supported Platforms | Website | Website |
|---|

AI-powered global payments and growth platform for merchants
Accept cards, wallets, online banking and BNPL across 200+ markets and 140+ currencies through a single gateway.
Route transactions across multiple gateways, acquirers and wallets with smart routing to raise success rates and cut development cost.
AI-driven risk decisions delivered in real time, trained on billions of data points to widen fraud coverage without blocking good buyers.
End-to-end subscription management, metered usage billing, invoicing and collections, plus automation for global tax compliance.

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.

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.

Provides similar cross-border payment processing and checkout integration, but focuses more on standard international gateway services than full merchant digitalization.

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.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
Exceptional UI wireframing and prototyping tools, but less versatile for general mind mapping and freeform brainstorming.
Acts as a merchant of record handling global billing and tax compliance, similar to Antom's checkout infrastructure.

SpecialistFocuses strictly on identity verification and AML compliance rather than end-to-end payment routing and merchant checkout.

SpecialistTransforms documents into strategic diagrams using AI, but less refined for everyday collaborative visual brainstorming.

SpecialistGenerates precise diagrams from code and text prompts, but lacks interactive freehand sketching and visual whiteboarding.
Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation.
Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical.
Provides similar cross-border payment processing and checkout integration, but focuses more on standard international gateway services than full merchant digitalization.
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.
Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library.
Exceptional UI wireframing and prototyping tools, but less versatile for general mind mapping and freeform brainstorming.
Acts as a merchant of record handling global billing and tax compliance, similar to Antom's checkout infrastructure.
SpecialistFocuses strictly on identity verification and AML compliance rather than end-to-end payment routing and merchant checkout.
SpecialistTransforms documents into strategic diagrams using AI, but less refined for everyday collaborative visual brainstorming.
SpecialistGenerates precise diagrams from code and text prompts, but lacks interactive freehand sketching and visual whiteboarding.