LibreOffice - Draw Alternatives for Mac OS X

Inkscape is a powerful, free, and open-source vector graphics editor widely used for creating scalable vector graphics (SVG). It's suitable for a range of design tasks, from illustrations and logos to web graphics and PDF editing, offering a robust set of tools comparable to commercial software.

Lucidchart is a leading web-based diagramming software that empowers individuals and teams to create complex visual representations of ideas, systems, and processes. It offers extensive shape libraries, real-time collaboration features, and seamless integration with popular productivity tools, making it ideal for flowcharts, UML diagrams, wireframes, and more.

Dia is a free and open-source diagramming software suitable for creating a variety of diagrams including flowcharts, UML diagrams, and network layouts.

yEd Graph Editor is a versatile and free desktop application for creating high-quality diagrams of various types, including flowcharts, UML diagrams, BPMN diagrams, and more. It offers powerful automatic layout algorithms and a wide range of formatting options, making it suitable for both simple and complex visualizations.

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.

PDFsam Basic is a free, open-source, and incredibly useful tool for handling PDF files. It excels at core functions like merging, splitting, rotating, and mixing PDFs, offering a simple and intuitive interface for both simple and complex tasks. It's available across major operating systems and doesn't require an internet connection.

Mindomo is a versatile online mind mapping software that helps users organize thoughts, collaborate on projects, and deliver dynamic presentations. It offers a rich set of features for brainstorming, planning, and visualizing information.

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.

Creately is a collaborative online visual workspace that goes beyond traditional diagramming, enabling teams to visualize, strategize, and manage workflows effectively. It supports a wide range of diagram types and real-time collaboration, making it ideal for diverse teams and projects.

MindManager is a premier mind mapping and visual thinking tool designed to organize complex ideas, manage projects, and enhance collaboration through dynamic visual representations of information.

Clip Studio Paint, formerly Manga Studio/ComicStudio, is a comprehensive digital art software tailored for creating comics, manga, and general illustrations. It offers a powerful suite of tools for sketching, inking, coloring, and panel layout.

CmapTools is a powerful, cross-platform software designed for creating, sharing, and visualizing knowledge graphically through concept maps. It facilitates constructing diagrams representing ideas and the relationships between them, suitable for brainstorming, knowledge management, and team collaboration.

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.

Boxy SVG is a powerful and intuitive vector graphics editor designed for creating scalable vector graphics. It provides a user-friendly interface with a comprehensive set of tools for drawing, editing, and manipulating SVG files effectively. Ideal for web designers, illustrators, and graphic artists working with vector graphics.

Torapp Guilloche Designer is a powerful web-based vector graphic editor specifically tailored for creating intricate guilloche patterns used in security printing and decorative designs. It combines standard vector editing tools with specialized functions for generating complex geometric patterns.

Nevron Draw is a comprehensive diagramming software designed to help users create professional-looking diagrams, flowcharts, floor plans, and more. It offers a rich feature set, collaborative capabilities, and extensive export options for various diagramming needs.

Diagrammix is a robust macOS application engineered for the efficient creation of professional-looking diagrams, flowcharts, and various graphical representations. It offers a user-friendly interface combined with powerful tools to quickly visualize complex information.