The difference between FlexCat and KitCat, CatComp and some others is, that FlexCat is designed to produce any source you want: any programming language, any individual needs should be satisfied. However, FlexCat is not more difficult to use. This sounds like a contradiction. FlexCat's solution is to use template files, the so called "source descriptions". Ready to use examples for Assembler, C, C++, E, Oberon and Modula-2 are distributed, additionally an example for supporting catalogs on Workbench 2.0. Any other examples are welcome.