Added static site generator description

README.md

@@ -1899,6 +1899,8 @@ Tools and software for [software testing](https://en.wikipedia.org/wiki/Software
 
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+[Static site generators](https://en.wikipedia.org/wiki/Web_template_system#Static_site_generators) can be viewed as a ready-made web design, used to mass-produce "cookie-cutter" websites for rapid deployment. They also commonly include themes in place of CSS styles. In general, the template language is used only with the editor's software.
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 **Static site generators are not listed within this list. Please visit [staticsitegenerators.net](https://staticsitegenerators.net), [staticgen.com](https://www.staticgen.com)**