MAMP - MAMP is the abbreviation for Macintosh, Apache, MySQL, and PHP. It is a reliable application with its four components that allows you to access the local PHP server as well as the database server (SQL).
Mendeley - Easily organize your papers, read & annotate your PDFs, collaborate in private or open groups, and securely access your research from everywhere.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996
Zotero - Zotero is a free, easy-to-use tool to help you collect, organize, cite, and share research.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Qiqqa - Qiqqa is a free research and reference management software. It can be used in many organizational projects from the academic to the personal to the business endeavor. Read more about Qiqqa.