Zettelkasten

The What

A Zettelkasten (German: 'slipbox', plural Zettelkästen) or card file consists of small items of information stored on Zetteln (German: 'slips'), paper slips or cards, that may be linked to each other through subject headings or other metadata such as numbers and tags. It has often been used as a system of note-taking and personal knowledge management for research, study, and writing.

References

Getting Started • Zettelkasten Method - good overview and introduction, with a ton of information throughout the site

My Take

It's amazing what one person was able to build with just slips of paper (highly organized, but still)