PhilPapers is an online directory of academic philosophy maintained by the community of philosophers. If you are trying to explore a new topic, doing preliminary research, or want to stay up-to-date, PhilPapers can be a great resource, for both undergraduate and graduate students.
The Directory of Open Access Journals was launched in 2003 at Lund University, Sweden, with 300 open access journals and today contains more than 10,000 open access journals covering all areas of science, technology, medicine, social science and humanities.
Ergo is a peer-reviewed, open access philosophy journal on all philosophical topics and from all philosophical traditions. This includes, among other things: history of philosophy, work in both the analytic and continental traditions, as well as formal and empirically informed philosophy.