Pencil

Pencil

Pencil.dev
+
+

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About

Pencil is an open source user interface drafting tool that Evolus builds on Mozilla 's technologies . This tool helps analysts and application interface developers to quickly draw application interfaces to document communication with customers in the process of collecting requirements or as a basis for the team. application development. The Pencil tool building project is one of Evolus' efforts to give back to the community. It is for that reason that Pencil has been released as an open source tool (GPL license) so that anyone can have the opportunity to use and access its source code to adjust and upgrade. . Pencil can be deployed as an add-on to the Mozilla Firefox 3 browser or as a standalone application. Pencil is a cross-platform application and can work well on any platform that Mozilla Firefox 3 supports.

About

Pencil.dev is an AI-powered design-in-code canvas and creative tool that brings visual interface design directly into development environments like Cursor, VS Code, and other IDEs so designers and engineers can work without handoffs between tools. Built around an agent-driven MCP (Model Context Protocol) canvas and an open design format that lives in your codebase, Pencil lets you draw, iterate, and generate pixel-perfect UI screens with AI assistance while keeping the design files versioned in Git alongside your source code, enabling branches, merges, and rollbacks like regular code. It eliminates the friction of switching between tools by embedding a Figma-like canvas into the IDE, supports importing frames and assets from Figma with vectors and styles intact, and lets you manipulate design elements directly with familiar editing panels, layers, and CSS-like properties, while AI models help generate screens, flows, and components in parallel.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Flowchart solution for companies

Audience

Front-end developers seeking an AI-integrated visual design canvas inside their coding workflow to streamline UI design and bridge the gap between design and production code

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version
Free Trial

Pricing

Free
Free Version
Free Trial

Reviews/Ratings

Overall 5.0 / 5
ease 5.0 / 5
features 5.0 / 5
design 5.0 / 5
support 5.0 / 5

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Evolus
Viet Nam
evolus.vn

Company Information

Pencil.dev
United States
www.pencil.dev/

Alternatives

Alternatives

MockupTiger

MockupTiger

Rudrasoft
Lucidchart

Lucidchart

Lucid Software
Fusion

Fusion

Builder.io

Categories

Categories

Diagram Features

Data Import / Export
Drag & Drop
Flowchart
For Developers
Mind Map
Multi-User Collaboration
Organizational Charting
Templates

Flowchart Features

Collaboration
Diagramming
Drag & Drop
Organizational Charting
Process Mapping
Revision Management
Templates
Text to Chart

Prototyping Features

Animation
Collaboration
Drag & Drop
Software Prototyping
Templates
UI Prototyping
Usability Testing
UX Prototyping
Version Control

UX Features

Animation
For Mobile
For Websites
Heatmaps
Prototyping
Screen Activity Recording
Unmoderated Testing
Usability Testing
User Journeys
User Research

Wireframe Features

Collaboration
Desktop Interface
Drag & Drop
Feedback Management
Interactive Elements
Mobile Interface
Mockup Creation
Page Linking
Presentation Tools
Prototype Creation
Revision History
Screen Capture
Wireframe Creation

Integrations

CSS
Claude Code
Cursor
Figma
Git
Model Context Protocol (MCP)
OpenAI Codex
Playwright
Puppeteer
Visual Studio Code

Integrations

CSS
Claude Code
Cursor
Figma
Git
Model Context Protocol (MCP)
OpenAI Codex
Playwright
Puppeteer
Visual Studio Code
Claim Pencil Project and update features and information
Claim Pencil Project and update features and information
Claim Pencil and update features and information
Claim Pencil and update features and information