The Best 69 Pencil Project Alternatives

  • Violet UML Editor icon

    Violet UML Editor

    Violet is a UML editor with these benefits: Very easy to learn and use. Draws nice-looking diagrams. Completely free. Cross-platform. Violet is intended for developers...

    Free Open Source Mac OS X Windows Linux

  • Mockup Designer icon

    Mockup Designer

    Mockup Designer, built with Backbone, Backbone-LocalStorage and Html2Canvas, is a super-easy-to-use mockup tool that uses the local storage of your browser as its...

    Free Open Source Web

  • Justinmind icon

    Justinmind

    Justinmind is the best solution to prototype any web or mobile app you can think of. You can define websites and apps for Web, iOS, and Android with our intuitive...

    Commercial

  • WireframeSketcher icon

    WireframeSketcher

    WireframeSketcher is a software tool that helps quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It comes both as a plug-in...

    Commercial Mac OS X Windows Linux Eclipse

  • Mockup Builder icon

    Mockup Builder

    Design your software or website mockups within minutes. Mockup Builder is a new look to solve old problem with prototyping and sharing sketches with customers. This...

    Freemium Web

  • Flairbuilder icon

    Flairbuilder

    FlairBuilder is a user interface prototyping tool for easy authoring of interactive website wireframes, mockups and GUI prototypes.

    Commercial Mac OS X Windows Linux

  • ProtoShare icon

    ProtoShare

    ProtoShare is a web-based, collaborative wireframing and prototyping tool. It hosts a WYSIWYG drag-and-drop interface, as well as advanced components users can...

    Commercial Web

  • ForeUI icon

    ForeUI

    EaSynth ForeUI is an easy-to-use UI prototyping tool. You can use ForeUI to create skinnable prototype of software or website, and run the interactive simulation in...

    Commercial Mac OS X Windows Linux

  • Iplotz icon

    Iplotz

    Wireframe your Ideas iPlotz allows you to rapidly create clickable, navigable mockups and wireframes for prototyping websites and software applications. Create a...

    Freemium Web

  • Prototype Composer icon

    Prototype Composer

    Serena Prototype Composer - the best agile application prototyping tool is now free! View the demo, take the product tour, or download it free today.

    Freemium Windows

  • GoVisual Diagram Editor icon

    GoVisual Diagram Editor

    The GoVisual Diagram editor (GDE) provides powerful functionality for editing and automatic layout of diagrams. Diagrams are represented in form of graphs and cluster...

    Free Windows Linux

  • TouchDraw icon

    TouchDraw

    TouchDraw is a vector drawing application that gives you everything you need to create structured 2D vector graphics such as flow charts, graphs, diagrams...

    Commercial

  • ObjectAid icon

    ObjectAid

    The ObjectAid UML Explorer is an agile and lightweight code visualization tool for the Eclipse IDE. It shows your Java source code and libraries in live UML class and...

    Freemium Mac OS X Windows Linux

  • MockupTiger icon

    MockupTiger

    MockupTiger is a web based application that helps you to build fluid wireframes, mockups or prototypes for your next web application or desktop software. It has a...

    Commercial Windows Linux Android iPhone Web

  • MockupCreator icon

    MockupCreator

    MockupCreator is a tool to create mockups, prototypes and wireframes. MockupCreator will help you to accelerate your products development and improve the quality of...

    Commercial Windows

  • Bizagi Modeler icon

    Bizagi Modeler

    Business Process Modeling Software. Bizagi BPM software puts simplicity first. Innovative drag and drop interface optimizes the best in clean, modern design.

    Commercial Windows Web

  • Lekh Diagram icon

    Lekh Diagram

    Lekh Diagram empowers you to express your idea on iPad and iPhone simply by sketching shapes with your finger. Lekh Diagram can be used to make diagrams, flow chart...

    Free Android iPhone iPad

  • PhotonJam LightBox icon

    PhotonJam LightBox

    PhotonJam's Lightbox is a light weight web based drawing app to easily create diagrams, flow charts, icons and doodles.

    Free Web

  • Keynotopia icon

    Keynotopia

    Prototype cheaply and quickly for iPad, iPhone, Android, Windows Phone 7, Facebook and web using Apple Keynote, Microsoft PowerPoint or OpenOffice Impress.

    Commercial Web