HEATKEYS

Quickly and Securely share documents online. Upload, Compare, Convert, Digitally Sign and View PDF, DOC, DOCX, PPT, PPTX, XLS and many other document formats.

Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.

News, tips and tricks from Google\

Computerworld covers a wide range of technology topics, including software, security, operating systems, mobile, storage, servers and data centers, and technology companies such as Microsoft, Google and Apple.

Comment on, edit, and fill out PDFs, Word documents, images and more. Highlight text and add comments using our free online document annotator.

IPEVO

Free viewer for PDF, DOC, DOCX, PHP, CFG, DAT etc. files

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Scientific Literature Digital Library incorporating autonomous citation indexing, awareness and tracking, citation context, related document retrieval, similar document identification, citation graph analysis, and query-sensitive document summaries. ...