“Haystack is a tool designed to let every individual manage all of their information in the way that makes the most sense to them. By removing the arbitrary barriers created by applications only handling certain information “types”, and recording only a fixed set of relationships defined by the developer, we aim to let users define whichever arrangements of, connections between, and views of information they find most effective. Such personalization of information management will dramatically improve each individual’s ability to find what they need when they need it.” [1]

[1] http://haystack.lcs.mit.edu/