
Flex-patterns is a front-end library (which can be extended to framework), which allows to use simple HTML files as templates, create modules, like requireJS does, create plug-ins as JQ.

Express.js is a simple Node.js framework for single, multi-page, and hybrid web applications.
Gulp.js is an old but popular site building tool that automates various repetitive development tasks in web development, such as compiling Sass, minifying JavaScript, and optimizing images.