Directory of Open Access Journals (DOAJ)
43% of open access journals are searchable at the article level in DOAJ.
As of October 15, 2010:
"There are now 5514 journals in the directory. Currently 2351 journals are searchable at article level. As of today 460453 articles are included in the DOAJ service.
- Directory of Open Access Journals (DOAJ)identifies "free, full text, quality controlled scientific and scholarly journals"
Google Scholar
- Google Scholarmany articles in open access journals can be identified through Google Scholar
Ulrich's International Periodicals Directory
73% of open access journals are indexed in at least one source.
Search results on October 15, 2010:
5,172 Active Open Access entries
3,764 Active Open Access entries with an indication for Abstracted/Indexed
- Ulrichsweb Global Serials Directorywithin the description for a specific periodical title, select the tab for "Abstracting / Indexing & Article Access"
CiteSeerx
- CiteSeerx"a scientific literature digital library and search engine that focuses primarily on the literature in computer and information science"