Facebook Login provides a way for users to login to an app using their Facebook account. It also allows users to grant permissions to the app to access their information or perform actions on Facebook on their behalf. There are also identical SDK's available for android and web development.
The 1Password App Extension SDK enables users to access their 1Password logins on an app login page. It also allows for use of the Strong Password Generator to create unique passwords during registration, and save the new Login within 1Password.
Firebase gives you functionality like analytics, databases, messaging and crash reporting so you can move quickly and focus on your users. Firebase is tested and trusted by major companies due to it being run by google.
AFOAuth2Manager is an extension for AFNetworking that simplifies the process of authenticating against an OAuth 2 provider. AFOAuth2Manager is available under the MIT license with full documentation available on cocoapods.
Auth0 is a platform that offers native or web based app development, server side web applications and , backend and API support. Auth0 gives developers and companies the building blocks they need to secure their applications without having to become security experts through authentication and authorization services.
Cocoa Touch (Barcodes) is the iOSvariant of the original Cocoa Barcodes project developed by Jeff Lamarche's. Cocoa Touch (Barcodes) provides authentic UPC and Code 128 barcodes that pass CCD and laser scanner tests run directly from the screen of the iOSdevice.
RSBarcodes allows you to scan 1D and 2D barcodes using metadata scanning capabilities introduced with iOS7 and generate the same set of barcode images for displaying and sharing. PR from MacMannes has been merged to make a part of code generators working on iOS5.1 above when RSBarcodes is implemented.