Hypothes.is is a nonprofit on a mission to bring an open conversation over the whole web. Use Hypothesis right now to hold discussions, read socially, organize your research, and take personal notes. Hypothes.is thinks simple tools can help us all improve the quality of information on the Internet and in the greater world around us. We are building an open platform for the collaborative evaluation of knowledge. It leverages sentence-level critique to enable discussion or note-taking on top of news, blogs, scientific articles, books, terms of service, ballot initiatives, legislation, regulations and more. We build software, push for standards and interoperability and foster community.