Bluebottle (formerly known as AOS and now as A2) is a modular, object-oriented Operating System with unconventional features. It has automatic and garbage collected memory management and provides soft real-time features and is developed at ETH Zurich. It is the next generation Native Oberon, the Oberon operating system  for bare PC hardware. It is small and fast and supports multiprocessor computers. It is completely based on an upward-compatible dialect of the Oberon programming language called Active Oberon. Its user interface supports a "point-and-click" metaphor to execute commands from text, similar to clicking hyperlinks in a browser. The interface is a zooming user interface. More and detailed information can be found in the Russian wikipedia article about A2 (operating system).
- ^ "Archived copy". Archived from the original on 2012-08-07. Retrieved 2014-01-07. ETH A2 License
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