HEATKEYS

Huge collection of graphic resource for designer include vector graphic, psd graphic, icons, font, photoshop brush all are free for download.

Microsoft Visio shapes, stencils, templates, add-on software, tools, books, forums, and resources.

Experts Exchange enables people with technology problems to quickly and easily solve their problems by collaborating with experts from around the world.

Clker.com provides a royalty free public domain clip art in vector SVG & ODG format and in image PNG format. You can easily embed images in openoffice.org .

Ultimate Communications is all about a true Unified Communications experience by Tommy Clarke [Lync MVP]

Iconfinder provides high quality icons for webdesigners and developers in an easy and efficient way

VisioCafe shapes stencils and templates for visio diagraming

Visio Guy - Shapes, Stencils, Drawings Templates, Tutorials, Tips & Developer Info for Microsoft Visio

Packet Life is a blog and community site for network engineers. Cheat sheets, free lab access, wiki, forums, packet captures, security tools.

Draw, share and collaborate on online diagrams. Easy web flow chart, network diagram, mockup, wireframe, UML diagrams like Class, Sequence, & data flow and process flow diagrams. Creately - free web-based software for online diagram software

Online diagram and flowchart software. Create diagrams and drawings such as flowcharts, mind maps, network diagrams, UML diagrams, wireframes, user interface designs and other drawings online with LucidChart.

As the global leader in Application Delivery Networking, F5 Networks is focused on ensuring the secure, reliable, and fast delivery of applications.