This project provides binary packages for the Ada front end of GNU compiler collection. The project also provides various Ada libraries like the Ada Web Server and Ada aware Integrated Development Environments (gps and vim).
Vim with Ada-Code, Ada aware Taglist and Onmicompletion.
Project Admins:
Is AdaGIDE Ada 2012 compliant? Ada 2005 compliant?
It is set to compile with -gnat05, i.e. Ada 2005 mode. You can override this with -gnat2012 in the compiler options (and -gnata if you want to use preconditions etc).
I won't be using it myself (because Emacs) but I have to say the way it formats keywords to UPPER CASE is so last century!