: . , , Access . Service : : * Electronic Library * Hybrid Library * Virtual Library * Library Of Future * Digital Library * Lib. with out wall * Portals * . Cybrary ( ) . : 1- : Digital Library . 2- () : Virtual Libraries . 3- : Electronic Library : . . Remote Access ( ) . . . : 1- . 2- . 3- . 4- . : :- 1. . 2. , , . 3. , . 4. . 5. . 6. (. )Multimedia 7. . 8. . 9. . : ( ) digital objects . ( ) physica organization ( logical )organization . : : : navigation : . categorization . . : : Metadata Metadata . : ( ). . . : : . 06-08% . Robots Spiders Webcrawler .Worms Search Engines . : ( ) www.digital.nypi.org Nanyang ( ) www.ntu.edu.sg/Library/Home/Digital ( ) www.cdlib.org ( ) www.icdlbooks.org ( ) www.ipl.org ( Oalster ) www.Oaister.umdl.umich.edu www.kyvl.org