Apache OpenOffice Draw
draw, part of the apache openoffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams.
Online diagram and flowchart software that supports Microsoft Visio import and can work on any operating system.
lucidchart is an online diagram and flowchart software that supports microsoft office visio import and can work on any operating system. the easiest way to draw flowcharts, wireframes, uml diagrams, network diagrams, mind maps, iphone mockups, site maps and more. work together in real time with your team and clients! along with the online version, lucidchart also has a downloadable solution that runs on mac, windows and linux; this enables offline editing at any time!
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Productivity Developer Tools Business and Commerce
web-based real-time-collaboration save-as-pdf team-collaboration flowchart uml charts diagramming flow-chart-creator generic-diagrams html5-based mind-mapping mockups prototyping sequence-diagrams sitemap-generator uml-diagrams visual-collaboration wireframing
draw, part of the apache openoffice suite, is a graphics editor that gives you the tools to communicate with visuals and diagrams.
Free Open Source Mac OS X Windows Linux
Lightweight, powerful, easy to use, UML tool Software Ideas Modeler is a lightweight and powerful CASE tool. It supports UML 2.2 diagrams and a lot of other ones. Software Ideas Modeler is freeware (for non-commercial use).
Free Personal Windows
mockingbird is an online tool that makes it easy for you to create, link together, preview, and share mockups of your website or application. It is not Flash based.
Commercial Web
ARIS Express is based on the proven ARIS methodology and industry standards. Its intuitive user interface and the latest improvements in modeling assistances enable instant results.
Free Windows
Task management, project management, to-do list, GTD, goal management, mind map, outliner, workflow, Gantt chart, projects, lists, brainstorming, meetings, school notes.
Freemium
PGF/TikZ is a tandem of languages for producing vector graphics from a geometric/algebraic description. PGF is a lower-level language, while TikZ is a set of higher-level macros that use PGF.
Free Open Source Mac OS X Windows Linux
Diagrammix is a tool for efficiently building attractive diagrams. If you are an office worker, developer, manager, supervisor, student or home user you can draw almost anything in extremely simple and intuitive way.
Commercial
Inspiration K-12 supports visual thinking techniques, enabling students to easily create and update graphic organizers, concept maps, idea maps and other ...
Commercial Mac OS X Windows
ADONIS:Community Edition is a free version of the BPM toolkit ADONIS aimed both at users new to the business process management, who need an intuitive tool for documenting processes and publishing them as HTML and Word, as well as BPM...
Free Windows