DOAJ - Directory of Open Access Journals
Find free, full text, quality controlled scientific and scholarly journals in all subject areas and many languages. DOAJ includes over 5368 journals, half of which are searchable to the article level. Over 440,000 articles available to search for free.
Education Research Global Observatory
"The Education Research Global Observatory maintains a complete and current directory of open access peer-reviewed journals in education."
"Scirus is the most comprehensive scientific research tool on the web. With over 410 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server...
"WorldCat is the world's largest library catalog, helping you find library materials online."