Which company developed the Swift programming language? Apple developed Swift.
Swift began at Apple in 2010 under the direction of Chris Lattner, who worked with other Apple engineers on a modern successor to Objective-C. Apple designed it for safer, clearer, and more expressive software development across its platforms, including iOS and macOS.
Apple introduced Swift publicly at its Worldwide Developers Conference in June 2014. The language was initially closely tied to Apple’s developer tools and operating systems, but it later expanded beyond them. Swift became open source in December 2015 under the Apache License 2.0, allowing outside developers to contribute to its evolution.
A common mix-up is confusing Swift with Objective-C, which it was intended to complement and eventually replace for many Apple-platform projects. Swift is also not an Apple-only language today: it supports platforms such as Linux and Windows, although Apple remains its originating and principal developer.