# Rivet.dev vs Whimsical

Rivet.dev records 21,359 monthly visits with -44.3% month-over-month growth and Freemium, Contact for Pricing pricing. Whimsical records 966,895 monthly visits with -18.7% growth and Freemium pricing.

| Metric | [Rivet.dev](https://openaitools.app/tool/rivet-dev) | [Whimsical](https://openaitools.app/tool/whimsical) |
| :--- | :--- | :--- |
| Website URL | https://rivet.dev | https://whimsical.com |
| Categories | AI Agent, AI Workflow, AI Developer Tools, AI App Builder | AI Productivity Tools, AI Project Management, AI Diagram Generator, Whiteboard AI |
| Pricing Model | Freemium, Contact for Pricing | Freemium |
| Monthly Visits | 21,359 | 966,895 |
| MoM Growth Rate | -44.3% | -18.7% |
| Primary Market | United States | India |
| Direct Visits | 10,710 | 602,358 |
| Review Score | 4.5 | 4.7 |
| Saved Count | 0 | 2 |
| Supported Platforms | Website | Website |

## Rivet.dev

At its core Rivet replaces the container per agent with an in-process primitive. An Actor runs inside your existing Node.js or Bun backend rather than in its own container or VM, which is why Rivet reports cold starts measured in single-digit milliseconds and a footprint of tens of kilobytes per Actor instead of hundreds of megabytes. Each Actor carries a SQLite database for memory, can access a filesystem and shell, sleeps when idle, and wakes with its durable state ready for the next request.

The platform handles the operational pieces teams usually build themselves: fault tolerance that reschedules Actors when a node goes down, multi-region placement that routes requests to wherever an Actor currently lives, end-to-end type safety where Actor definitions generate client types, and scheduling via cron or self-set timestamps. Storage is pulled apart into two tiers — a fast SSD for instant writes and object storage that settles writes at a fraction of the cost — so running many small databases stays affordable.

Rivet positions itself as infrastructure for the "agentic era" and can be deployed as a managed cloud, inside your own VPC through a bring-your-own-cloud model, or fully self-hosted down to air-gapped networks. It is open source under Apache 2.0, backed by Y Combinator and a16z Speedrun, and integrates with popular coding agents and frameworks.

**Pricing & Plans:** Rivet Cloud uses a plan-plus-nodes model. The control plane is Free ($0) for prototyping, Hobby at $10/month, Team at $120/month, and Enterprise at $900/month, each raising control-plane redundancy, Actor Node caps, and support. Actor Nodes are billed per month on top, from $4.20 (R-5) to $94.50 (R-160). Self-hosting is free and open source under Apache 2.0, and startups from Y Combinator or a16z Speedrun get 50% off the Team plan for 12 months.

- **Durable actors with persistent state:** Every Actor gets a SQLite database and a filesystem, so an agent's memory and progress survive restarts and idle periods without a separate database.
- **Lightweight secure sandboxing:** Run untrusted or AI-generated code on your own infrastructure with fine-grained control over network access, filesystem permissions, and resource limits.
- **Fault tolerance and workflows:** A node failure reschedules its Actors elsewhere with state intact, and multi-step work replays after a crash — with no checkpointing harness to build yourself.
- **Realtime and multiplayer:** Address an Actor directly over HTTP or hold a live WebSocket, and use the React SDK to subscribe components to an Actor's state in real time.
- **One-binary deployment and observability:** Ship with a single stateless Rust binary, embeds storage in S3-compatible buckets, and emits OpenTelemetry traces, metrics, and logs to your existing collector.

**Strengths:** Four-digit millisecond cold starts and a very small per-Actor memory footprint let a single server host far more agents; Open source (Apache 2.0) with a single Rust binary, so it can be self-hosted, run in a VPC, or air-gapped; Durable state via per-Actor SQLite plus object-storage-backed tiers keeps agents restart-safe and cheap; Strong developer ergonomics: typed SDKs, a React SDK, WebSocket networking, and OpenTelemetry baked in

**Limitations:** Requires Node.js or Bun and a working Rust-based control plane deployment for self-hosting, so it favors backend engineers over no-code users; Advanced durability and sandboxing concepts (Actors, WarpDrive storage) carry a learning curve; Managed cloud cost scales with Actor Nodes, which can climb for many mid-sized/sized nodes; Enterprise features like multi-tenancy and hardened compliance guidance sit behind sales conversations

[Profile (Markdown)](https://openaitools.app/tool/rivet-dev.md)

## Whimsical

Whimsical is a collaborative visual workspace aimed at product builders — designers, product managers, engineers and the cross-functional teams around them. Instead of juggling a diagramming app, a whiteboard, a wireframing tool and a docs tool, Whimsical puts diagrams, flowcharts, mind maps, wireframes, boards and clutter-free documents on a single infinite canvas. Everything is real-time multiplayer, so a sprint-planning flowchart or a user-flow wireframe can be sketched, commented on and refined by the whole team in one shared space.

Its AI layer is what makes Whimsical more than a drawing tool. AI Flowcharts turns a written process description into a structured flowchart with a single prompt; AI Mind Maps expand one idea into a fully branched tree you can reorganise; AI Wireframes generate editable wireframes and wireflows for web and mobile from text. Because the output is native, editable Whimsical content rather than a static image, the AI acts as a first-draft accelerator instead of a dead end.

Around the canvas sits the practical scaffolding that teams need: reusable templates, comments attached to the exact object in question, image and video embeds (Loom, YouTube and more), version history with restore, live embeds inside other tools, Slack and GitHub integrations, and a desktop app for macOS and Windows. Admins on larger plans get private teams, SAML SSO, SCIM provisioning and content security locks, which is why Whimsical scales from a solo PM to an entire organisation. Whimsical, Inc. states it is SOC 2 Type 2 compliant and supports GDPR and CCPA requirements.

**Pricing & Plans:** Freemium. The Free plan costs $0 and includes unlimited boards and members but limits output to 50 board objects and 50 doc blocks per month with export watermarks and 7-day history. Pro is $10 per editor/month billed annually ($12 monthly) with unlimited objects, no watermarks and 90-day history. Business is $20 per editor/month annually ($24 monthly) and adds private teams, SAML SSO, SCIM, security controls and unlimited version history. Viewers and guests are always free; students, teachers and non-profits get special pricing.

- **Prompt-to-visual AI tools:** 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.
- **One infinite canvas:** 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.
- **Real-time multiplayer editing:** Multiple teammates edit the same board simultaneously with live cursors, thread comments attached to specific objects, and mention-based notifications.
- **Wireframing and user flows:** 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.
- **Enterprise-ready controls:** Private teams, SAML single sign-on, SCIM provisioning, role management, user offboarding file transfers and content security locks support large organisations.

**Strengths:** AI generates native, editable Whimsical objects rather than flat images; Single workspace replaces separate diagramming, whiteboarding, wireframing and docs tools; Unlimited viewers and guests are free on every plan, including Free; Fast, lightweight editor with an excellent template library

**Limitations:** Free plan caps you at 50 board objects and 50 doc blocks per month plus export watermarks; AI credits are limited per seat and extra credits cost more; Advanced admin and security features are locked behind the Business tier; Very large, asset-heavy boards can feel slower than focused single-purpose tools

[Profile (Markdown)](https://openaitools.app/tool/whimsical.md)

## Frequently Asked Questions

### How do Rivet.dev and Whimsical compare in monthly traffic?

Rivet.dev has 21,359 monthly visits, while Whimsical has 966,895. Traffic estimates describe audience size, not product quality.

### How do their growth rates compare?

Rivet.dev has a month-over-month growth rate of -44.3%; Whimsical has -18.7%.

### How does pricing compare?

Rivet.dev: Freemium, Contact for Pricing. Rivet Cloud uses a plan-plus-nodes model. The control plane is Free ($0) for prototyping, Hobby at $10/month, Team at $120/month, and Enterprise at $900/month, each raising control-plane redundancy, Actor Node caps, and support. Actor Nodes are billed per month on top, from $4.20 (R-5) to $94.50 (R-160). Self-hosting is free and open source under Apache 2.0, and startups from Y Combinator or a16z Speedrun get 50% off the Team plan for 12 months. Whimsical: Freemium. Freemium. The Free plan costs $0 and includes unlimited boards and members but limits output to 50 board objects and 50 doc blocks per month with export watermarks and 7-day history. Pro is $10 per editor/month billed annually ($12 monthly) with unlimited objects, no watermarks and 90-day history. Business is $20 per editor/month annually ($24 monthly) and adds private teams, SAML SSO, SCIM, security controls and unlimited version history. Viewers and guests are always free; students, teachers and non-profits get special pricing.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Miro](https://openaitools.app/tool/miro) | 30,749,206 | +1.7% | Freemium, Contact for Pricing | Industry standard collaborative whiteboarding with massive template libraries, but less streamlined for rapid AI diagram generation. | [.md](https://openaitools.app/tool/miro.md) |
| 2 | [Taskade](https://openaitools.app/tool/taskade) | 539,714 | -9.4% | Freemium | Combines mind mapping and project workflows with AI agents, but less focused on pure visual diagramming and wireframes. | [.md](https://openaitools.app/tool/taskade.md) |
| 3 | [Boardmix](https://openaitools.app/tool/boardmix-online-whiteboard) | 447,560 | -6.2% | Freemium | Robust collaborative whiteboard with strong AI diagramming tools, but less polished UI wireframing capabilities than Whimsical. | [.md](https://openaitools.app/tool/boardmix-online-whiteboard.md) |
| 4 | [Mastra](https://openaitools.app/tool/mastra) | 318,954 | -5% | Freemium, Contact for Pricing | The TypeScript framework for building, deploying, and observing AI agents | [.md](https://openaitools.app/tool/mastra.md) |
| 5 | [Edraw.AI](https://openaitools.app/tool/edraw-ai) | 216,483 | -10.4% | Freemium, Free Trial, Paid | Dedicated diagramming platform with strong AI chart generation, but less focus on freeform collaborative brainstorming whiteboards. | [.md](https://openaitools.app/tool/edraw-ai.md) |
| 6 | [MyMap.AI](https://openaitools.app/tool/mymap-ai) | 206,056 | -6.6% | Freemium | Instantly turns natural language prompts into mind maps and flowcharts, but offers less freeform canvas drawing flexibility. | [.md](https://openaitools.app/tool/mymap-ai.md) |
| 7 | [Agent 37](https://openaitools.app/tool/agent-37) | 180,030 | +24.2% | Free Trial, Contact for Pricing | The low-cost cloud sandbox where AI agents actually live | [.md](https://openaitools.app/tool/agent-37.md) |
| 8 | [Cloudairy](https://openaitools.app/tool/cloudairy) | 179,162 | -13% | Freemium, Contact for Pricing | Combines whiteboarding and documentation with AI generation, but lacks Whimsical's specialized wireframe shape library. | [.md](https://openaitools.app/tool/cloudairy.md) |
| 9 | [MockFlow](https://openaitools.app/tool/mockflow) | 177,254 | -7.9% | Freemium, Paid | Exceptional UI wireframing and prototyping tools, but less versatile for general mind mapping and freeform brainstorming. | [.md](https://openaitools.app/tool/mockflow.md) |
| 10 | [Coder](https://openaitools.app/tool/coder) | 149,417 | -12.8% | Free Trial, Contact for Pricing, Free | Self-hosted cloud development environments and AI coding agents for enterprise teams | [.md](https://openaitools.app/tool/coder.md) |

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Source: https://openaitools.app/compare/rivet-dev-vs-whimsical

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