An GUI prototyping tool that's available for ALL platforms.
pencil.evolus.vn Source★ 372GPL-2.0Design / UI/UX Design & Prototyping
- Monthly visits
- 6K
- Down27.3%MoMSep 2026
- Public revenue
- Undisclosed
- No public revenue evidence yet
- Entry price
- Free
- No monthly subscription pricing
- Launched
- 11y ago
- 2015-07-04 · Est.
Traffic
Marketing moves
Launches, search & content, referrals, promotionsLaunched on Product HuntLaunch
An open-source prototyping tool avilable on all platforms
Jul 4, 2015 · 11y agoLaunch page
Open Source & Agent Ecosystem
- GitHub Stars
- ★ 372
- Forks
- 39
- License
- GPL-2.0
- Primary language
- Go
- Ecosystem & integrations:
- ClaudeCursorAntigravityOpenClipart.org
Traffic sources
Traffic breakdown
Channels
- Organic Search38%
- Direct38%
- Referrals10%
- Social6%
- Other8%
Countries
- Brazil39%
- Mexico12%
- France9%
- United States9%
- India7%
Search
Domain authority —Domain registered Unknown
| Keyword | Monthly volume |
|---|---|
| pencil | 134.6K |
| pencil project | 2,330 |
| pencil software | 290 |
| pencil download | 240 |
| download pencil_3.1.1.ga_amd64.deb | 210 |
Traffic data: Vaneform
Pricing
Website does not list public plan prices.
Trial: None · Observed 2026-11-05 · Source page
Pages & changes
Key pages
Weekly snapshotsChanges
No pricing, plan, or positioning changes detected since tracking started.
Design
Enterprise Clean (Light canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.
First-screen preview · click to zoom
First-screen pitch & conversion flow
“PENCIL PROJECT”
Split Copy & Visual hero structure paired with download app / install extension CTA and no explicit trust bar.
Conversion path: Split Copy & Visual + Product UI Screenshot / Component → Download App / Install Extension
- Category Positioning Anchor
- Large Hero Product Shot
Palette · click to copy
- Typography
- 5.0
- Color & Contrast
- 6.0
- Layout & Spacing
- 6.0
- Craft & Polish
- 5.0
- Distinctiveness
- 5.0
Structure
- Fonts
- Arial
- Hero layout
- Split Copy & Visual
- Primary visual
- Product UI Screenshot / Component
- Conversion CTA
- Download App / Install Extension
- Social proof
- No Explicit Trust Bar
- Navigation
- Full-Width Top Bar
- Theme & density
- Light · Balanced
- Corners & depth
- Small Radius · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Enterprise Clean
Trustworthy blue-anchored palette, structured grids, and prominent customer logo walls.
## Design Tokens
```css
:root {
--background: #ffffff;
--surface: #f5f5f5;
--foreground: #222222;
--muted-foreground: #666666;
--accent: #f9a43b;
--radius: 4px;
--font-heading: "Arial", ui-sans-serif, system-ui, sans-serif;
--font-body: "Arial", ui-sans-serif, system-ui, sans-serif;
}
```
Color area ratio: Background #FFFFFF (~65%) · Surface #F5F5F5 (~10%) · Text #222222 (~12%) · Muted Text #666666 (~8%) · Accent #F9A43B (~5%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.
## Layout & Conversion Structure
- Hero layout: Split Copy & Visual
- Navigation: Full-Width Top Bar
- Theme & density: Light · Balanced
- Border radius & elevation: Small Radius; use elevation shadows to separate layers
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Download App / Install Extension
- Headline hook: Category Positioning Anchor
- Hero components: Large Hero Product Shot
- Spatial layout notes: Split Copy & Visual hero structure paired with download app / install extension CTA and no explicit trust bar.
- Visual summary: Enterprise Clean (Light canvas, balanced density) featuring split copy & visual layout and product ui screenshot / component visuals.
## Avoid
- Experimental navigation patterns
- Low-legibility decorative fonts
- Visual novelty that obscures the value proposition
Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.
Questions & evidence
- How much website traffic does Pencil get?
- Vaneform estimates 6K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
- What is Pencil and what platforms does it support?
- Pencil is catalogued under UI/UX Design & Prototyping: An GUI prototyping tool that's available for ALL platforms.. Supported platforms: MCP Server.
- Is Pencil open source?
- Pencil has a public repository (https://github.com/evolus/pencil) under the GPL-2.0 license, recording 372 GitHub stars.Source
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