text: The following tables compare notable reference management software. The comparison includes older applications that may no longer be supported, as well as actively-maintained software.
  General
  In the "notes" section, there is a difference between:
  web-based, referring to applications that may be installed on a web server (usually requiring MySQL or another database and PHP, Perl, Python, or some other language for web applications), and;
  a centrally hosted website.