Articles and Books
swisscovery RZS (discovery tool of the ZHB)

Databases
DBIS Philosophy (philosophical and interdisciplinary databases)

Online Journals
BrowZine Philosophy (thematically organized directory of a selection of philosophical e-journals licensed by the ZHB)

Reference Works
Historisches Wörterbuch der Philosophie Online (compiled between 1971 and 2007 by over 1,500 scholars; 12 volumes plus index based on the history of philosophical terms)
Stanford Encyclopedia of Philosophy (established in 1995; continuously supplemented with new entries)
Routledge Encyclopedia of Philosophy (established in 2001; based on the 10-volume print edition from 1998; interdisciplinary; regularly updated)
Encyclopedia of Philosophy(electronic version of the 2nd edition of the 10-volume print edition from 2006)