WeView 2

The WeView 2 library is a tool for auto layout of iOS UIs.

WeView 2 is an alternative to iOS Auto Layout.
WeView 2 aims to provide an easier, more natural, more expressive, and more maintainable way to create dynamic, adaptive UIs with UIKit.
WeView 2 takes a declarative approach to layout using familiar concepts like alignment, margins and spacing.
WeView 2 builds on iOS’ existing sizing and layout mechanisms.
WeView 2 is lightweight: less than 5k lines of code, no dependencies.
WeView 2 is compatible with iOS 5 and later.
WeView 2 is free and open source. It is available under a permissive license.
WeView 2 is easy to learn: if you read the “Basics” page of the tutorial, you’ll know everything you need to get started.