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

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

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

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

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

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

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

Enables users to find, view, and share full-text scientific articles instantly.

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

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