Top Alternatives to Pencil Project

draw.io is free online diagram software for making flowcharts, process diagrams, etc

Microsoft Visio (formerly Microsoft Office Visio) is a diagramming and vector graphics application and is part of the Microsoft Office family.

LibreOffice is a full-featured office productivity suite that provides a near drop-in replacement for Microsoft Office.

OmniGraffle is a diagramming and digital illustration application for macOS and iOS.

Sketch is a proprietary vector graphics editor for Apple's macOS, developed by the Dutch company Bohemian Coding.

Apache OpenOffice Draw. Makes drawing business processes and diagrams a snap! Draw - from a quick sketch to a complex plan, Draw gives you the tools to communicate with graphics and diagrams. With a maximum page size of 300cm by 300cm, Draw is powerful tool for technical or general posters, etc.

Balsamiq Mockups is a rapid wireframing tool that helps you Work Faster & Smarter.

Moqups is a streamlined and intuitive web app that helps you create and collaborate on wireframes, mockups, diagrams and prototypes for any type of project.

Gliffy is software for diagramming via a HTML5 cloud-based app. It is used to create UML diagrams, floor plans, Venn diagrams, flowcharts and various other kinds of diagrams online.

Adobe XD is a commercial vector user experience design tool for designing web apps and mobile apps

Axure RP is a wireframing, rapid prototyping, documentation and specification software tool aimed at web and desktop applications.

SmartDraw is the smartest way to draw any type of chart, diagram: flowcharts, org charts, floor plans, network diagrams, and more.

Edraw Max is comprehensive mind mapping and planning tool network diagrams, floor plans, workflow diagrams, business charts, and engineering diagrams.

UXPin is a collaborative design platform, allowing entire teams to participate in the design process from start to finish.

SpiderScribe.net is an online mind mapping and brainstorming tool. It lets you organize your ideas by connecting notes, files, calendar events, etc. in free-form maps.

Mock up an application and show what's important, the idea, the information, the interaction.

Diagram Designer is a vector graphics editor that allows you to create UML class diagrams, illustrations, flowcharts and slide shows.

Figma is a collaborative interface design tool.

MockFlow is a collection of wireframe tools, prototyping tools, UI mockups, UX suite.

VisiTouch helps you view and convert to PDF your MS Visio diagrams for iPhone.

Nevron Draw is a software for creating flowcharts and diagrams.

Scapple is an easy-to-use tool for getting ideas down as quickly as possible and making connections between them.

Mockup Designer is an online mockup creator.

Pidoco is a cloud-based collaboration software.