Most of the tools, I think, are just scripts with a GUI that non-technical folks like me can just click their way through.  
The kernel update tool lets MX users update the kernel 
on a Live USB.
"Mintstick," renamed in MX, lets users format a USB drive 
and/or write a bootable iso to the thumbdrive.  I don't remember how I did it, but I have Mintstick on my SalixOS setup.  The "big deal," I guess, is that it's there by default in MX.  
I'm not sure how the boot repair tool works, but for newbies, technophobes, and the technically challenged (or, if you prefer, the lazy) can update and edit Grub with a few clicks of a mouse, from the LiveUSB.  
here is an explanation.
I couldn't tell you much about the Broadcom manager, since I've never used it.  But 
here is a link to the wiki page on that tool.
A repository manager probably is unnecessary in SalixOS anyway, but in a big distro with multiple repos and mirrors it might matter.
As I suggested, these are prob'ly just scripts with some kind of GUI instead of doing these things from the command line.
I should have been scared away from SalixOS the minute I read that it was Slackware-based, but when others wrote about how simple and graphical it is, I just had to give it a try, if only to find a simple Xfce systemd-free OS that wasn't full of a bunch of bloatware and duplicate-function software.  Coming from Xubuntu and having had trouble with Debian before, I wouldn't have imagined I could run 
any derivative of Slackware, famous for being super-technical and complicated!  When I introduce friends, classmates, and family to Linux, though, Salix isn't "newbie friendly" enough (YET) for most of the people I know who would even care to look for an alternative OS.  I'd 
love to see it made so, if I'm not being too presumptuous in even wishing for it.  But I want to say thank for "taming wild Slackware" for people like me!