PhilPapers is a comprehensive index and bibliography related to philosophy and maintained by the community of philosophers. Using trawling techniques and large scale crowdsourcing, philosophers monitor all sources of research content in philosophy, including journals, books, open access archives, and personal pages maintained by academics.
PhilPapers’ index and its archive are integrated with the largest structured bibliography in the field. PhilPapers’ structured bibliography organizes half a million entries into more than 5,000 topics at different levels of generality. Classification is maintained by a combination of automatic classification, crowd-sourcing, and curation work done by approximately 400 appointed academics.