Alpha

1. Early version of a computer software program or hardware device. Alpha comes before the beta test.Generally, most alpha releases and testing is done by the developer of the program or hardware device. When the product enters the beta stage, it is generally released to a select few outside the company.
2. When referring to a platform, refers to DEC or Digital computers.
3. Alpha is also short for alphabet and is used to describe any letters.

Also see: Alphanumeric, Beta, RC