Today I have generated a web-based source code browser to http://trinitycore.github.io/codebrowser/ for both 3.3.5 and 6.x branches.
It was created with Woboqand it has quite some nice features like function navigation or tooltips with usage information (of each class, function, etc).
Give it a try (I find it faster and easier to use than firing up Visual Studio to find something in the code), I hope it’s useful for some.