A new open-source tool called Homebridge is now available on GitHub that emulates the iOS HomeKit API and uses a series of user-contributed plugins to allow third-party devices, such as those by Nest and Sonos, to work with HomeKit, allowing for some level of Siri integration (assuming the manufacturer has not built an app itself to accomplish this). In related news, Apple on Tuesday released the open-source component ("Darwin") of OS 10.11 El Capitan, following the open-sourcing of the Swift programming language, and the release earlier today of OS X 10.11.2, the second update to El Capitan.
