Maxkmertkit is a front-end framework with an awful lot of different features.
Maxmertkit features a structure (class names) that’s more intuitive than that of BootStrap, and, well, it has more things that the former does.
The framework, besides the various widgets and components, even sports a drag’n'drop generator in the homepage.
However, if you opt to give this framework a try, you should pay attention to any future modifications that might be needed; the framework’s structure does seem to make modifying it a pretty difficult task.