MIDIbox

A pre-release version of software, distributed to a selected group of users to test. At most software producers, software beta tests start with internal staff and a few selected users, and grows to many users during the late rounds of testing. By the end of a beta test, all major bugs should have been discovered and repaired. Generally, beta testing is considered to the the final pre-release stage of the tests, including experienced testers external to the developing organization.