Instacart's app -appropriately- shows the licenses of some tools they use in their app development. Here's the list (as of Dec 2018)

Instacart-tools.txt

AFNetworking = A delightful networking framework for iOS, macOS, watchOS, and tvOS.
Alamofire
AlamofireNetworkActivityIndicator
Bolts-ObjC = Bolts is a collection of low-level libraries designed to make developing mobile apps easier.
FLEX = An in-app debugging and exploration tool for iOS
ISO8601
JLRoutes = URL routing library for iOS with a simple block-based API
JSQMessaagesViewController = An elegant messages UI library for iOS
JSQSystemSoundPlayer = A fancy Obj-C wrapper for Cocoa System Sound Services 
Kingfisher = A lightweight, pure-Swift library for downloading and caching images from the web.
Mantle = Model framework for Cocoa and Cocoa Touch
NSObject-Rx = Handy RxSwift extensions on NSObject, including rx_disposeBag.
OmniAX = UIAccessibility wrapper
PINCache = Fast, non-deadlocking parallel object cache for iOS, tvOS and OS X
Reachability.swift = Replacement for Apple's Reachability re-written in Swift with closures
RxSwift = Reactive Programming in Swift
SSKeychain
SnapKit = A Swift Autolayout DSL for iOS & OS X
SwiftyJSON
TTTAttributedLabel = drop-in replacement for UILabel that supports attributes, data detectors, links, and more
Willow = powerful, yet lightweight logging library written in Swift.
YogaKit = cross-platform layout engine which implements Flexbox
analytics-ISO8601
card.io-IOS-source = provides fast, easy credit card scanning in mobile apps
facebook-ios-sdk
ios-snapshot-test-case
lottie-ios = An iOS library to natively render After Effects vector animations
mapper = A JSON deserialization library for Swift
rollbar-ios = catch errors
safeguard
stripe-ios