Is Code Sourcery G++ Lite still a viable project?
"Another Company" is the EDA giant Mentor Graphics. Whether they plan to embrace, extend, and extinguish the excellent G++ Lite toolchain or not, I do not know.  I do know that they're in business to sell Really Expensive Software.  Like other companies, they sell a front-end for Code Sourcery G++ Lite, and it's in their best interests to hide it as best as possible.  codesourcery.com didn't do as good a job hiding it.  Mentor Graphics hid it pretty well, which makes me skeptical of this press release about their "commitment to the future of open source for embedded development."

However, they do a decent job of getting you to the commercial version, which, by the blessed GPL, contains links to the source.  I got to it by following the menu set Products -> Embedded Software -> Sourcery Tools -> Sourcery CodeBench and scrolling to the very bottom to find the personal, academic, and lite versions: 



Those links direct you to the mysteriously difficult-to-navitage pages https://sourcery.mentor.com/sgpp/lite/arm/portal/subscription?@template=lite.
The subscription breadcrumb in the URL and repeated suggestions to log in are for paid support and trials of the IDE.  Just ignore them.

From that page, you'll see something like the following, with a link to the EABI version (An acronym for the ARM Extended Application Binary Interface, use this if you want to program bare-metal apps) as well as versions which link against the libraries that will be installed with other operating systems.



Clicking on the EABI "All versions" link from this page brings you to https://sourcery.mentor.com/sgpp/lite/arm/portal/subscription3053, the site you linked in your comment.

You're correct, there are no backwards links.  Use your browser history to navigate.  

Slightly OT: I've used the Code Sourcery paid tools (they came free with a TI DSP DSK).  The debugging utilities would be handy for a beginner, but the rest of the tool set (the editor, the project builder, the GUI compiler configurator) was a pain.  I ended up using an external text editor, and just using the app for compiling and debugging.  I certainly don't think it was worth $2800.  You're taking the right route with the Lite edition.