Advanced Memory Systems (AMS) was one of the most important independent peripheral companies for Amstrad computers during the 1980s. Its main contribution was the commercialization of the AMX Mouse and its associated desktop software, which allowed Amstrad PCW users to add a Graphical User Interface (WIMP) to their monochrome machines, similar to the user experience offered by Macintosh or PCs of that era.

AMS was a pioneer in bringing mouse interactivity to 8-bit systems that originally lacked this functionality, significantly extending the lifespan and capabilities of the PCW range.

Although the AMX ecosystem achieved massive critical success within the Amstrad PCW range, Advanced Memory Systems also successfully adapted its hardware interfaces and supporting graphics software (AMX Art and WIMP environments) to other contemporary 8-bit microcomputers widely popular in the British market, including the Sinclair ZX Spectrum, the Amstrad CPC, and the BBC Micro.