Alpha version (internal beta): Generally only operated in the software development company, not openly public. Mainly developers testing products, checking if there is defects, errors, verifying product functions and manuals, whether the user manual is consistent. BETA version (external beta): Software development company is an external publicity, free delivery of informal products to a typical user, allowing users to test the shortcomings of the software and have problems in order to further improve and improve before formal issuance . Generally downloaded from Internet for free, you can also request software companies. Demo version (demo version): Mainly to demonstrate part of the functional software, users can learn the basic operation of the software, and have an impact on the sale of official products. If it is a game, only one or two levels can be played. This version can also be downloaded for free from the Internet. Release version (released): Not official version, with time limit, is one of the propaganda strategies made to expand impact. For example, the release of Windows Me is limited to only a few months, download free to download for free from the Internet or from the company. Full Version version (full version): It is also a formal version, which is the final version of the official release.
Example: Beta2.0, Release1.02 Suitable for: Compared with the formal software, commercial software, game software, etc.
