Zewo - Lightweight library for world wide web server apps in Swift on macOS and Linux driven by coroutines. CocoaHTTPServer - A modest, light-weight, embeddable HTTP server for macOS or iOS apps. HTTP Implementation for Swift on Linux and macOS. Twitter Text Obj - An Objective-C implementation of Twitter's text processing library. Lockbox - Objective-C utility class for storing data securely in the vital chain.