YouTube is a place to discover, watch, upload and share videos.

Vimeo is a respectful community of creative people who are passionate about sharing the videos they make. We provide the best tools and highest qualit...

Screenr - Instant screencasts for Twitter. Now you can create screencasts for your followers as easily as you tweet. Just click the record button and ...

Scribd is a social publishing site, where tens of millions of people share original writings and documents. Scribd

Facebook helps you connect and share with the people in your life.

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Zotero is a powerful, easy-to-use research tool that helps you gather, organize, and analyze sources and th...

YouRepeat.com is a YouTube repeater. Repeat Youtube videos. Search youtube and repeat any video.

Variable Length Subnet Masking calculation made easy! For computer network administrator, engineer, student