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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

UML Diagrams - Graphical Notation Overview and Reference

Sandbox is a set of tools and resources to enable developers and merchants to develop eCommerce web sites and applications using PayPal web services.

PayPal is the faster, safer way to send money, make an online payment, receive money or set up a merchant account.

Fun On Rails is a ruby and rails blog which includes information about ruby language and ruby gems, rails framework, rails plugins, jQery, CSS, haml, nginx, SEO, radiant cms, geokit, asterisk, adhearsion and linux programming development

Quora is a continually improving collection of questions and answers created, edited, and organized by everyone who uses it.