Where to find them

Usually googling the following:

"(prefix) (thing) (suffix)"

Where prefix can be:

• iOS

• Swift

• Obj-c

• Objective-c

And suffix:

• framework

• lib

• library

• pod

• cocoapod

• carthage

shall retrieve what you are looking for. For example, a google search for "iOS loading animation framework" will bring MBProgressHUD between the first results. Your main goal here is to find a GitHub repository.

Useful websites

Besides Google, you can also find frameworks in these websites:

https://cocoapods.org/

https://www.cocoacontrols.com/ (most things here are old and don't use package managers, use this as a last resort)