LayoutKit is a fast view layout library for iOS, macOS, and tvOS.

Fast Swift Views layouting without auto layout. No magic, pure code, full control and blazing fast. Concise syntax, intuitive, readable & chainable. [iOS/macOS/tvOS/CALayer]

UIKit a-là SwiftUI.framework [min deployment target iOS10]

FlexLayout adds a nice Swift interface to the highly optimized facebook/yoga flexbox implementation. Concise, intuitive & chainable syntax.

Proteus : A JSON based LayoutInflater for Android

nidium is an ongoing effort for a mobile hw-accelerated rendering engine to create apps and games. Embedding Mozilla JavaScript VM, Google Skia, Facebook Yoga. https://twitter.com/nidiumproject for updates

Apple's Auto Layout and Visual Format Language for javascript (using cassowary constraints)

pure CSS masonry layouts

Taitank is a cross platform lightweight flex layout engine implemented in C++.

The layout engine for React

A feature-rich and highly customizable library for creating user interfaces in Neovim.

Modern desktop framework from low-level 3D graphics API to high-level view model, for development of 2D/3D rendering software or game engine, with internationalization support and many new technologies.

✂ Easy to use and flexible library for manually laying out views and layers for iOS and tvOS. Supports AsyncDisplayKit.

graph and drawing algorithms framework

Flexbox & CSS-style Layout in Swift.

📦 React-inspired UIKit Components - ⚠️ Deprecated

A diagram layout engine designed specifically for software architecture diagrams

Panda is an asynchronous render and layout framework which can be used to achieve high performance tableview.

A d3 layout for creating XKCD style narrative charts

C# HTML Layout and HTML Rendering Engine