The Global List of Digitally Endangered Species – The Bit List – offers an accessible snapshot of the concerns expressed by the global digital preservation community with respect to the risks faced by diverse types of digital content in varied conditions and contexts. It provides an elementary assessment of the imminence and significance of the dangers faced by different, and at times overlapping classifications of digital materials. By identifying the urgency of action and significance of content, The Bit List draws attention to those digital materials that, in the view of the global digital preservation community, require urgent action to remain viable.

 Access the full Bit List List Report for 2021
  • Watch the Introduction to the Bit List of Digitally Endangered Species 2021


Click on each of the risk classifications to see the entries for each category, browse the Bit List by digital species or click each entry for the full report:

Risk Classifications

Species Categories



Access older versions of the Bit List, now superceded

Bit List Entry of the Week

Latest Bit List Blogs

Latest Comments

Latest Comments

Scroll to top