The web site for QUANTUM ESPRESSO is http://www.quantum-espresso.org/. Releases and patches can be downloaded from this site or following the links contained in it. The main entry point for developers is the GitLab web site: https://gitlab.com/QEF/q-e.
The recommended place where to ask questions about installation
and usage of QUANTUM ESPRESSO, and to report problems, is the
mailing list users@lists.quantum-espresso.org.
Here you can obtain help from the developers and from
knowledgeable users. You have to be subscribed (see the ``Contacts''
section of the web site) in order to post to the users'
list. Please read the guidelines for posting, section !
NOTA BENE: only messages that appear to come from the
registered user's e-mail address, in its exact form, will be
accepted. Messages "waiting for moderator approval" are
automatically deleted with no further processing (sorry, too
much spam). In case of trouble, carefully check that your return
e-mail is the correct one (i.e. the one you used to subscribe).
If you need to contact the developers for specific questions about coding, proposals, offers of help, etc., you may either post an ``Issue'' to GitLab, or send a message to the developers' mailing list developers@lists.quantum-espresso.org. Please do not post general questions there: they will be ignored.