'''Stream2''' was an operating system extension for the Amstrad CPC released by the german company [[Advanced Software Project]] (Ronald Heitmann and Martin Lancorn) in the middle of the 90ies. It contained a graphical user interface and a new file system called "Prem", which was part of its [[AMSDOS]] replacement "MoDOS". One of the most impressive parts of Stream2 was x-Plain, which was a module for rendering very fast vector-based graphics.
Stream2 was called "operating system", but due to the fact, that it was still based on the CPCs' own operating system, it was rather an extension like GEOS or MS Windows 3.11. The advantage of this concept was, that it is still possible to run smaller [[Locomotive BASIC]] programs and a some of the old CPC software.
A big problem for the success of Stream2 was, that it was high priced commercial software and copy-protected. It's price was relatively high. Released in the middle of the 90's, when most people weren't interested in spending money for CPC software anymore, it hasn't been sold very often. As well as the disc version, there was a ROM version (that boots from ROM) later on, but probably only available for customers of the disc version.
The software was pretty buggy, that started with the scroller on the start screen and prolonged in applications. It's not known it the copy protection had any impact on that.