Select Android apps now can be run on Chrome OS
During Google I/O this past June, a number of updates to Chrome OS were announced, including plans to enable the ability to run Android applications on Chromebooks.
Chromebooks are known for being relatively affordable alternatives to laptops, and they literally start up in seconds. Once started up, operation is generally fast and fluid.
The first four apps that are now compatible with Chrome OS are, Duolingo, Evernote, Slight Words, and Vine. Evernote and Vine are popular and need no introduction. Duolingo, in case you are not familiar, is a language learning application, and Slight Words is children’s game that assists with reading and vocabulary.
source: Google Chrome Blog
Things that are NOT allowed: