Supports many formats, offers powerful search tools, and many export formats. It comes with many languages and online-search tool that searches in many external-databases like arXiv, CiteseerX, Google Scholar, IEEEXplore, and Springer.
It is a high-quality typesetting system; it includes features designed for the production of technical and scientific documentation. LaTeX is the de facto standard for the communication and publication of scientific documents.
It is a free academic social network that offers reference/citation manager and extensions. Mendeley network allows researchers to collaborate online and use online, desktop or browser extensions to increase their productivity.
It is a free, easy-to-use tool to help you collect, organize, cite, and share research. Also, it instantly creates references and bibliographies for any text editor, and directly inside Word, LibreOffice, and Google Docs.