DB Solo - let's you view the source of SP, functions, views with just a right click. Can edit data in the table previews. Can connect to multiple database systems. Displays all sources pretty much the same way - so you learn one, you learn them all.
I've used it for years and tried just about every other gui out there and I keep coming back to it - it truly is a FRIEND for life - I always have it.
But, There is one up-and-coming tool which looks very promising which I use: MS SQL Operations Studio - like VS Code - it is lightweight and sleek, and can have plugins made for it, but, still lacks so many of the features in DB Solo that I simply cannot part with DB Solo. But, out of all of the tools out there, I think MS SOS will be the only one to give DB Solo a challenge.