Top Alternatives to Axure RP

Pencil Project is a free and open-source GUI prototyping tool that helps designers and developers create wireframes and mockups easily. Available as a standalone application and a Firefox extension, it offers a wide range of built-in shapes and templates for various platforms.

OmniGraffle is a robust diagramming and vector graphics application designed for macOS and iOS. It empowers users to create a wide range of visuals including precise flowcharts, complex network diagrams, organizational charts, and intricate illustrations.

ConceptDraw PRO is a versatile diagramming tool designed for creating professional business graphics, flowcharts, mind maps, project diagrams, and more. It provides a comprehensive set of tools and libraries for visual communication and project management.

Apache OpenOffice Draw is a powerful vector graphics editor within the OpenOffice suite. It's ideal for creating flowcharts, diagrams, technical drawings, and general vector illustrations with ease and precision.

Balsamiq Mockups is a low-fidelity wireframing tool designed for rapid prototyping and brainstorming. It allows users to quickly create mockups of user interfaces and collaborate on design ideas with a focus on functionality rather than detailed visual design.

Moqups is a versatile web-based design and collaboration tool for creating wireframes, mockups, diagrams, and prototypes, streamlining the design process from concept to handoff.

Gliffy is a user-friendly, cloud-based diagramming tool that simplifies the creation of flowcharts, UML diagrams, floor plans, and other visual representations directly in your web browser.

Concept.ly is a comprehensive web and mobile prototyping tool that empowers design teams to rapidly transform wireframes and designs into interactive, high-fidelity prototypes. It facilitates real-time collaboration, streamlined feedback collection, and efficient design handoff.

SmartDraw is a powerful diagramming tool that simplifies the creation of various visual aids, including flowcharts, organizational charts, floor plans, and network diagrams. It offers intelligent formatting and a vast library of templates and symbols for quick and accurate diagramming.

Edraw Max is a powerful, all-in-one diagramming software for creating professional diagrams, charts, floor plans, network diagrams, and much more. It offers a vast library of templates and symbols for various industries, facilitating efficient visual communication and project planning for individuals and teams.

UXPin is a comprehensive design platform for creating interactive prototypes, wireframes, and mockups. It facilitates seamless team collaboration throughout the design process, from initial concept to developer handoff.

Antetype is a robust design and layout tool built to streamline the creation of highly functional user interfaces and prototypes. With a focus on efficiency and precision, it leverages a rich set of features including a comprehensive widget library and powerful layout options, enabling designers to rapidly iterate and refine their UI designs.

Enterprise Architect is a comprehensive visual modeling and design tool based on the OMG UML standard, supporting a wide range of modeling disciplines from software design to business process modeling and requirements management.

Mockingbird is a streamlined online tool for creating interactive wireframes and mockups quickly. It helps designers, product managers, and developers visualize user flows and application UIs early in the design process, focusing on the core structure and interaction.

Fluid UI is a powerful, browser-based wireframing and prototyping tool designed specifically for creating interactive mobile touch interfaces with speed and ease. It empowers designers and developers to rapidly build and test ideas.

Lovely Charts is an intuitive online diagramming application designed for creating professional diagrams quickly and efficiently. It caters to various diagramming needs, including flowcharts, sitemaps, organization charts, and more, offering a user-friendly interface and essential collaboration features.

Diagramo is a robust, open-source web-based diagramming tool perfect for creating flowcharts, graphs, and various diagrams directly in your browser. Built on HTML5, it offers real-time collaboration and flexible export options, making it accessible and versatile.

Diagram Designer is a free, lightweight vector graphics editor for creating various diagrams, including flowcharts, UML diagrams, illustrations, and slideshows.

MockFlow is a comprehensive design platform offering a suite of tools for wireframing, prototyping, UI mockups, and collaboration. It helps teams visualize and iterate on ideas for websites and applications.

ProcessOn is an intuitive online diagramming tool designed for creating flowcharts, mind maps, UML diagrams, and more. It facilitates real-time collaboration and sharing, making it ideal for teams needing to visualize processes and ideas together.

ProcessMaker is a leading open-source digital process automation platform designed to streamline workflow and business process management.

Mockup Designer is an intuitive web-based tool enabling users to rapidly create mockups, wireframes, and simple prototypes. It simplifies the initial stages of design and collaboration with a drag-and-drop interface and real-time co-editing capabilities.