Running High Sierra (10.13.3), LaunchBar 6.9.4 here. I've been using LaunchBar since around 2002, way before Apple came up with Spotlight search. It is one of the most essential third-party utilities on my Mac. I tend to steer clear of "system enhancement" utilities for many reasons, but I consider this one an excellent exception to the rule.
I like that it is just a stand-alone, standard Mac app that doesn't tweak the system unnecessarily. I love how it requires almost no maintenance hassle. I like how it is not fiddly. I love that it adjusts to my habit, not the other way around like most other apps. And I love how it's minimalist on the surface but provides an infinite number of functionalities that genuinely save time and remove workflow friction.
I use it for launching apps, maintaining a large number of snippets for coding, run word, and character count instantly, access all my contact instantly, move things around, find folders, and so on. Snippets are simply a bunch of text files in a folder, so there is no vendor lock-in, and editing and updating my snippets are very straight-forward because of that. The whole thing flows so naturally for me that I often forget that it's there.
Oh, and the funny thing about it is that I don't feel crippled when I have to work on a Mac without LaunchBar. I simply resort to using OS X Spotlight with the same keyboard shortcut. I notice it's not LaunchBar, but it's SO MUCH better than learning to use the Mac in a novel, unusual fashion and then feel utterly crippled on someone else's Mac. To me, that level of unobtrusiveness is one of the "features" I love about LaunchBar.
Strongly recommended. 100 stars if I could give them. :)