| Library Classification System | Developer’s Name | Year |
|---|---|---|
| Of the Proficience and advancement of Learning, Devine and Human / Bacon’s Scheme for the Classification of Knowledge | Francis Bacon | 1605 |
| Harris Classification System | William Torrey Harris | 1870 |
| A Classification and Subject Index for Cataloguing and Arranging the Books and Pamphlets of a Library / Dewey Decimal Classification (DDC) | Melville Louis Kossuth (Melvil) Dewey | 1876 |
| Expansive Classification System | Charles Ammi Cutter | 1886 |
| Putnam Classification System | George Herbert Putnam | 1897 |
| Quinn / Brown Classification | James Duff Brown | 1898 |
| Adjustable Classification | James Duff Brown | 1898 |
| Universal Decimal Classification (UDC) | Paul Marie Ghislain Otlet and Henri La Fontaine | 1905 |
| Library of Congress Classification (LCC) | James C. M. Hanson | 1904 |
| Subject Classification James Duff Brown | James Duff Brown | 1906 |
| Colon Classification | S. R. Ranganathan | 1933 |
| Bibliographic Classification | Henry Evelyn Bliss | 1935 |
| Rider’s International Classification: For the Arrangement of Books on the Shelves of General Libraries | Arthur Fremont Rider | 1961 |
| Automatic Keyword Classification for Information Retrieval | Karen Sparck Jones | 1971 |
| Broad System of Ordering (BSO) | United Nations International Scientific Information System (UNISIST) | 1978 |