Most of articles you will find here are written mainly for medical professionals, but they are free and available for everyone. The searches are updated continuously. You can use this 1-click search to browse what's new in the biomedical literature on HIV.
This link searches a huge medical database of the U.S. National Library of Medicine, selecting recent, peer-reviewed articles in English with "HIV" in the citation or abstract. It only finds articles that offer full text free online. These are much more accessible to non-subscribers to the particular medical or other journal, and are often the most important articles.
PubMed: more than 900 recent (2009 or later) HIV articles with free full text online