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yEd is a free desktop application to quickly create, import, edit, and automatically arrange diagrams. It runs on Windows, Mac OS X, and Unix/Linux.
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Gliffy is a powerful HTML5 online diagram maker. Create a flow chart, network diagram, UML diagram, organizational chart or wireframe with ease.
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A cloud-based diagram maker for companies, teams, and you.
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Wondershare EdrawMax is an all-in-one application for creating professional-looking documents, visualizing, and collaborating better.
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The JavaScript toolkit for graph visualization.
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A dynamic, browser based visualization library.
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Monitor, test and validate the accuracy of your web tags, critical user paths and more with ObservePoint's automated Data Quality Assurance solution.
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blockdiag and its family generate diagram images from simply text file. Features:.
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Creates diagrams from textual descriptions! It provides a unified API with support for BlockDiag, BPMN, Bytefield, C4 (with PlantUML), Ditaa, Erd, GraphViz, Mermaid, Nomnoml, PlantUML, SvgBob, UMLet, Vega, Vega-Lite, WaveDrom.
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iPlotz allows you to rapidly create clickable, navigable mockups and wireframes for prototyping websites and software applications. Create a project, add wireframe pages with design components and discuss your creations with others.
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Teracy is a wireframe kit designed to speed up your wireframing process.
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A program for creating ASCII graphics from images and text.
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Textik is a free ASCII diagrams editor which allows you to create any text-based ASCII diagram.
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EgoNet is a comprehensive, easy-to-use, and highly resourceful Visualization tool that allows you to gather and run an analysis of egocentric network data.
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ASCII Art Studio has been designed to help create ASCII art.
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Centrifuge is a complex and highly useful data analysis tool that allows for interactive data exploration.
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nomnoml is a free and open source tool to generate nice looking UML diagrams from simple text definitions.
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UModel is a web-based tool that enables developers to use UML diagrams to express their software requirements.
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Pajek is a lightweight solution developed from scratch by an extraordinary team of developers for the purpose of Large Network Analysis.
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Commetrix is a rich software framework that is built to help you initiate Dynamic Network Analysis and Visualization.