Join Forces with the World’s Leading Libraries and Publishers for Preservation

Since 2006, scholarly publishers and research libraries have collaborated to provide a global dark archive to ensure the long-term survival of Web-based scholarly content.

Today, with 310 supporting libraries and 250 participating publishers, CLOCKSS preserves the authoritative versions of 30 million journal articles, over 25,000 serial and 75,000 book titles, and a wide array of supplementary materials and metadata information, regularly checking the validity of stored data and preserving it for the long term.

Affordable and Sustainable - As an independent, tax-exempt 501(c)(3) not-for-profit charitable organization, CLOCKSS is committed to keeping fees affordable, to allow libraries and publishers of all sizes and budgets to participate in CLOCKSS. Low operating costs make it possible to keep this commitment.

To join CLOCKSS or set up a webinar introduction, please contact us at +1 (248) 848 7079 or info@clockss.org

Supporting Libraries

- Libraries Materials Budgets - - Annual Contribution -
Under $1 million $465
$1 - 2 million $615
$2 - 3 million $1,235
$3 - 4 million $1,855
$4 - 5 million $2,470
$5 - 7 million $3,090
$7 - 9 million $4,320
$9 - 11 million $5,560
$11 - 13 million $6,795
$13 - 15 million $8,030
$15 - 20 million $9,265
$20 - 25 million $12,350
Over $25 million $15,440

Consortial discounts are available. Please send email to info@clockss.org.

Download:
2018 CLOCKSS Supporting Library Form 

Participating Publishers

The 2018 annual contribution below covers e-journals, e-books, and any other archived materials.

- Total Publishing Revenue - - Annual Contribution -
Under $250,000 $232
$250,000 - 500,000 $465
$500,000 - 1 million $1,090
$1 - 5 million $2,180
$5 - 10 million $4,360
$10 - 15 million $6,540
$15 - 20 million $8,720
$20 - 30 million $10,900
$30 - 40 million $13,080
$40 - 50 million $15,260
$50 - 200 million $16,365
Over $200 million $27,275

Modest transactional fees include:

  • Front file ingest for journals is $0.25/article, with no charge for the first 100 articles. Backfiles are $0.15/article, with discounts at high volumes.
  • For books, frontlist ingest is $3.00/book, with no charge for the first 10 books. Backlist books are $2.00, with discounts at high volumes.
  • Archiving a new format with CLOCKSS may also include a setup fee that depends on the nature and complexity of the content.

Download: