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Stack Overflow is a question and answer site for professional and enthusiast programmers. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about programming. | It is a cross-language, cross-platform application programming interface for rendering 2D and 3D vector graphics. The API is typically used to interact with a graphics processing unit, to achieve hardware-accelerated rendering. |
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It connects you to everything you want to know about. Quora aims to be the easiest place to write new content and share content from the web. We organize people and their interests so you can find, collect and share the information most valuable to you.
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Automatically compile simple JavaScript functions into shader language and run them on the GPU. In case a GPU is not available, the functions will still run in regular JavaScript.

It is the easiest quiz making tool that anyone can use. It’super-simple user-interface makes it easy to use and anyone with any level of skills or experience can create a quiz, an online exam, or any type of online assessment using the ProProfs Quiz Maker. Its features like templates, automated grading, and instant feedback are a super time-saver.

It was formed to allow developers to freely share their knowledge, code and ideas. We believe that by opening your code to others, by teaching those who are learning, and by sharing our daily experiences we all become better programmers. We understand that no matter how advanced you are in your field, we were all beginners once. There's always something more to learn.

It is an AI-powered search and chat platform for developer products. You can provide immediate answers to customer questions by leveraging your existing public and private content.

It is open source and works great as a Q&A, forum, knowledge base or customer support platform. Deployable on premises or to any cloud.

It is a JavaScript library which adds the HTML5 Canvas support to Internet Explorer. It renders shapes and images via Flash drawing API, and in many cases, runs faster than other similar libraries which use VML or Silverlight.