GainMaster 1.1 that could have been downloaded from our website for free. This free software is an intellectual property of FiberCore Limited. The following version: 1.1 was the most frequently downloaded one by the program users. The program's installer is commonly called GainMaster.exe. GainMaster lies within Photo & Graphics Tools, more precisely 3D Design.
From the developer:
Gainmaster™ enables EDFA designers (or anyone with an interest in EDFA functionality) to model amplifier designs accurately, quickly and simply. GainMaster’s™ iteration function allows simultaneous modeling of component variables. Simply specify the value range of a parameter within the amplifier design, and view the variation in EDFA performance graphically. This enables rapid identification of optimum system parameters.
You may want to check out more software, such as Plate 'n' Sheet Development Pro., CAD To DMC or TachyCAD, which might be related to GainMaster.