BFKit-Swift is a collection of useful classes, structs and extensions to develop Apps faster.

If you are looking for Objective-C version check it out here: BFKit

Foundation:
Array
Collection
Data
Date
FileManager
Number
NSObject
ProcessInfo
String
Thread

UIKit:
UIBarButtonItem
UIButton
UIColor
UIDevice
UIFont
UIImage
UIImageView
UILabel
UINavigationBar
UIPasteboard
UIScreen
UIScrollView
UITableView
UITextField
UITextView
UIToolbar
UIView
UIViewController
UIWebView
UIWindow

BFKit:
BFApp
BFButton
BFLog
BFPassword
BFSystemSound
BFTextField
BFTouchID