Apps similar to Diagram Designer include draw.io, which is free and open source. Other options are Penpot, Excalidraw, LibreOffice - Draw and Dia. You're spoiled for choice with Diagram Editors like Diagram Designer: we list more than 50 alternatives for Windows, the web, Mac, Linux and iPhone.
Ever wanted to simplify documentation and avoid heavy tools like Visio when explaining your code? This is why mermaid was born, a simple markdown-like script language for generating flowcharts, Gantt charts and sequence diagrams from text via JavaScript.
Sweden
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An open source wireframe to app tool powered by Llama 3.2 vision. Upload a screenshot of a simple site/design & get code.
United States
Efficient web-based tool for constructing high-quality commutative diagrams. Offers LaTeX export with embedded links, intuitive interface supporting both mouse and keyboard inputs, and features like multiple selections, macro support, and smart label alignment.
United Kingdom
Free vector graphics editor offering real-time collaborative editing, browser and cross-platform desktop support, scalable design tools, AI, EPS, SVG, PNG, JPEG import/export, grouping and shape manipulation, and intuitive pen and freehand drawing options.
Singapore
Feature-rich, open-source Wireflow offers a collaborative platform for online creation of complex user flow prototypes. Ideal for team work in UI design, wireframing, and mind mapping, promoting idea sharing in real-time environment aided by modern whiteboard features.
Google Drawings, part of Google Drive, allows users to collaborate creating, sharing, and editing images or drawings. It can be used for creating charts, diagrams, designs, flow-charts, etc.
United States
Mindomo is the easiest online software for creating mind maps, concept maps, outlines and various other types of diagrams. The following features make it the perfect choice both for business and education:
RomaniaEU
Versatile diagram software offering extensive templates for flowcharts, org charts, and more. AI integration simplifies diagramming, facilitates project analysis, and includes features like chatbots and OCR. Suitable for personal, professional, and collaborative use.
China
Visual Paradigm for UML (VP-UML) is a UML design tool and UML CASE tool designed to aid software development. VP-UML supports key modeling standards such as Unified Modeling Language (UML) 2.4, SysML, ERD, DFD, BPMN 2.0, ArchiMate 2.0, etc.
Hong Kong
OmniGraffle can help you make eye-popping graphic documents—quickly—by providing powerful styling tools, keeping lines connected to shapes even when they’re moved, and magically organizing diagrams with just one click.
United States
Simple web based ascii flow diagram drawing tool, draw boxes, lines, arrows and type, then export straight to text/html.
Akira is a native Linux Design application built in Vala and GTK. Akira focuses on offering a modern and fast approach to UI and UX Design, mainly targeting web designers and graphic designers. The main goal is to offer a valid and professional solution for designers who want to...
ItalyEU
