Kaggle is an online community of data scientists and machine learners.

Host prizes in science, promoted to researchers, societies and universities.

Crowdfund to support research – for a more science engaged world.

A crowdfunding platform for individuals to donate to medical research projects.

Help nonprofits identify funding sources, build prospect networks, and win funding.

Find, Read and Support Free Ebooks. Crowdfund books into the public commons.

An easy and intuitive way to discover, read, annotate, write and share scientific research.

Google's mission is to organize the world's information and make it universally accessible and useful.

Share ideas with colleagues and peers, collaborate together, share results, and get feedback from all over the world.

Free reference management and collaboration tool that allows users to search an online catalog of millions of documents.